Programmierung
Create an Enterprise-Level Test Automation Framework with Appium
Think from a framework design perspective and move beyond straightforward coding skills. You’ll design an enterprise level test framework that is capable of supporting both TDD and BDD at the same time, using the latest open source tools and coding best practices. Taking a less-is-more approach, superfluous information is excised in favor of sleek and direct instruction and focused coding practices.Your framework will be built with Spring-Boot, Gradle, and Junit. And it will support HP QC integration, Allure (TDD, BDD), Extent (BDD), and customized Pdf reporting (TDD, BDD). Extensive utilities are provided, such as HP ALM integration, device management utilities, email reporting, pdf reporting, OCR utility, Log utility, and more! There’s also a special chapter on internationalization/localization testing in multiple languages. After reading this book, you’ll have full confidence in your ability to build new test automation frameworks for yourself.Though primarily written for software professionals who are in test automation, recent engineering graduates who have programming knowledge and want to prepare for a role in mobile test automation will also find what’s taught here helpful. Test engineers and computer science graduates alike can use what they learn here to become absolute pros in test automation.WHAT YOU'LL LEARN* Design an enterprise level mobile test automation framework capable of supporting both TDD and BDD* Work with the latest open source tools and coding best practices* Build with Spring-Boot, Gradle, and Junit while supporting HP QC integration, Allure, Extent, and customized PDF reportingWHO THIS BOOK IS FORSoftware professionals working in test automation. Recent engineering graduates who have programming knowledge and want to prepare for a role in mobile test automation should also find it helpful.KOUSHIK DAS is an Automation Architect with over 18 years of experience in software development, manual testing, and test automation. He has built automation frameworks for mobile, web, and desktop applications using a variety of tools. Koushik believes in leveraging the power of test automation whenever possible and has recently published a book to help mobile test automation engineers graduate to an architect role. When not testing software, Koushik likes reading, traveling, and playing with his baby daughter.IntroductionChapter 1: Automation Framework OverviewFramework Technology StackFramework Key FeaturesScripting Strategy FollowedAutomation Coding Standards FollowedChapter 2: Creating the Wireframes with Spring-BootBootstrapping with Spring-BootOpening Your Project in IntelliJIntelliJ PluginsDeciding on your Folder StructureChapter 3: Configuring GradlePreparing build.gradlePreparing gradle.propertiesCreating Annotations for Gradle TasksPreparing settings.gradleChapter 4: Creating the Properties FilesCreating Your Properties FilesReading from Properties File with Spring-Boot LibraryReading from Properties File Traditional WayChapter 5: Creating Android, iOS and Web Drivers On DemandCreating Driver with Standard Desired CapabilitiesCreating Driver with Default ServiceCreating Drivers for Grid or Cloud ExecutionQuitting Driver and TeardownChapter 6: Enhancing Framework – Common Mobile ActionsCreating VariablesCoding for Common Screen ActionsChapter 7: Creating Page ObjectsInitializing Page Objects and Workflow ClassDeciding on Locator StrategyWriting Page Object MethodsChapter 8: Writing Your First Test SuiteUsing Various AnnotationsWriting Soft AssertionsPlugging in the Reporting ModuleRunning Test Suite in GradleChapter 9: Importing Test Data From Excel, XML or Other FormatsImporting Test Data from ExcelImporting Test Data From XML and Other FormatsChapter 10: Adding BDD Capabilities with CucumberUsing Spring Runner with CucumberGenerating ExtentReport in Runner ClassWriting Step DefinitionsRunning Test Suite in GradleChapter 11: Adding Allure Reporting for TDD and BDDGenerating Allure ReportViewing Allure ReportChapter 12: Making Extent Report Better and Workable with JunitMaking Extent Report Work with JUnitImproving Extent Report to Print Data-TablesCreating Separate Extent Report for each Test-SuiteChapter 13: Creating a PDF Report with ScreenshotsCreating a PDF Util to Generate reports for each Test SuitePassing Parameters to PDF Util from Test SuiteMerging Multiple PDFsChapter 14: Enhancing Framework – ScreenshotsCreating Screenshot and Saving at Default LocationCreating Screenshot and Saving at Variable LocationCreating Screenshot with Page Object NameChapter 15: Testing Multiple Apps and Versions in Same Test SuiteTesting Multiple Versions of App in Same Test SuiteTesting Multiple Apps in Same Test SuiteBest Practices To FollowChapter 16: Running Scripts or Batch Files From Test SuiteScenarios Where Running Script or Batch Files Are RequiredRunning Script or Batch Files from Test SuiteSome ExamplesChapter 17: API TestingTesting REST API with Web ClientExampleChapter 18: Advanced Topic I – Adding Device Management FunctionsOverviewUnlocking DeviceToggling Wi-FiSetting LanguageSetting Device Date, Time, Timezone and Time FormatReading Device PropertiesEnabling and Disabling App NotificationsChapter 19: Advanced Topic 2 – Integrating with HP ALMUsing ALM 15.x APILogin and AuthenticationCRUD Operations in AboutAppTestSuiteChapter 20: Advanced Topic 3 – Adding Localization Testing CapabilitiesDeciding on Approach Based on RequirementsLocalization Testing in AndroidLocalization Testing in iOSChapter 21: Advanced Topic 4 – Implementing Parallel Test ExecutionManaging multiple SessionsUpdating BaseTest ClassUpdating Test Suites and Step DefinitionsChapter 22: Other UtilitiesOverviewOCR UtilImage Comparison UTILEmail UtilAppendixAudience: Intermediate
Softwarearchitektur pragmatisch
Der Weg von der Software- in die Unternehmens-ArchitekturAls frischgebackener Architekt aus Ihrer IT-Domäne müssen Sie plötzlich mit anderen Architekten zusammenarbeiten und wichtige Entscheidungen treffen. Aber Sie verstehen davon noch zu wenig.Mit diesem Buch ändert sich das. Anhand von Betriebssystemen, die den Zugriff auf gemeinsame Güter regeln, lernen Sie Software-Architekturen zu analysieren. Architektur-Muster werden identifiziert und Architektur-Prinzipien entdeckt. Als Nicht-Software-Entwickler erfahren Sie die Architektur komplexer Software-Systeme, als Software-Entwickler erweiterten Sie Ihren Horizont.Im zweiten Teil schlüpfen Sie in die Rolle des Enterprise-Architekten, dessen Arbeit stark von Einflussfaktoren und Qualitätsmerkmalen geprägt werden. Anhand eines Transformations-Projektes durchlaufen Sie gewisse TOGAF Phasen, entdecken ArchiMate und vertiefen sich in die Informations- und Applikations-Architektur mit dem Gartner PACE Modell und diversen Sichten, die Ihnen helfen, die Architektur zu beschreiben. Dabei finden die Architektur-Muster Anwendung, die Sie bei den Betriebssystemen kennengelernt haben.Aus dem Inhalt:Teil 1: Architektur entdeckenEinführung in die Software-Architektur am Beispiel verschiedener BetriebssystemeParallelisierung von ProzessenTeil 2: Entwerfen einer ArchitekturEinflussfaktoren der ArchitekturTOGAFArchiMateApplikations-ArchitekturIntegrations-ArchitekturScotland Trading – Beispiel einer TransformationChecklisteLeseprobe (PDF-Link)Autor: Philipp Friberg ist SAP Solution Architekt hat Software-Engineering an der Hochschule Rapperswil und Science in Business Information Systems an der Hochschule Liechtenstein studiert. Sein Wissen vermittelt er als Dozent an der TBZ Höheren Fachschule Zürich, als Autor sowie als Speaker auf Fachkonferenzen.
Einstieg in SAPUI5
Lernen Sie die UI-Technologie von SAP mit all ihren Funktionen kennen. Ob Anfängerin, Junior-Entwickler oder Dynpro-Profi – dieses praktische Einsteigerbuch vermittelt Ihnen, wie Sie Webanwendungen mit SAPUI5 entwickeln. Dank der Beispiele zu den neuen Entwicklungsumgebungen Visual Studio Code und SAP Business Application Studio sowie nützlicher Gestaltungstipps gelingt Ihnen der Einstieg in SAPUI5 mühelos. Aus dem Inhalt: Erste Schritte in SAPUI5 und OpenUI5JavaScript, CSS3 und HTML5Entwicklungsumgebung einrichtenLaufzeitumgebungSystemanbindung mit ODataSAP Fiori AppsSAP Business Application StudioVisual Studio Code Einleitung ... 13 Zum Aufbau des Buches ... 14 Danksagung ... 16 Danksagung zur dritten Auflage ... 17 1. HTML5 und CSS3 ... 19 1.1 ... Einführung in HTML5 ... 20 1.2 ... Einführung in CSS ... 34 2. JavaScript ... 45 2.1 ... Grundlagen ... 45 2.2 ... Variablen ... 56 2.3 ... Operatoren ... 59 2.4 ... Kontrollstrukturen - Bedingungen und Schleifen ... 62 2.5 ... Document Object Model ... 73 2.6 ... Ereignisse ... 80 3. jQuery ... 83 3.1 ... Grundlagen ... 83 3.2 ... Selektoren und Ereignisse ... 84 3.3 ... DOM-Manipulation ... 92 3.4 ... AJAX ... 96 4. Entwicklungsumgebung einrichten ... 105 4.1 ... SAP Business Application Studio ... 105 4.2 ... Visual Studio Code ... 112 4.3 ... ECMAScript6-Entwicklung ... 116 4.4 ... Vergleich von Visual Studio Code mit SAP Business Application Studio ... 118 5. Erste Schritte in SAPUI5 ... 119 5.1 ... Webentwicklung auf dem SAP NetWeaver Application Server ABAP ... 120 5.2 ... Model-View-Controller-Architekturmuster ... 128 5.3 ... SAPUI5-Entwicklungsprojekt anlegen ... 130 5.4 ... SAPUI5-Demokit ... 142 5.5 ... Ihre ersten SAPUI5-Anwendungen ... 144 5.6 ... Debugging ... 162 6. SAPUI5-Laufzeitumgebung ... 169 6.1 ... Initialisierung der Anwendung ... 169 6.2 ... Modelle zur Datenbindung ... 195 6.3 ... Datenbindungstypen ... 216 7. Weitere Techniken in SAPUI5 ... 239 7.1 ... SAPUI5-Datentypisierung ... 239 7.2 ... Layoutanpassungen ... 248 7.3 ... Components ... 266 7.4 ... Fragments ... 290 7.5 ... Kundeneigene Controls ... 298 7.6 ... Kommunikation mit dem SAP-Backend ... 303 8. Systemanbindung mit OData ... 309 8.1 ... Open Data Protocol ... 309 8.2 ... SAP Gateway ... 314 8.3 ... OData-Service implementieren ... 315 8.4 ... OData-Service konsumieren ... 337 8.5 ... Smart Controls ... 362 8.6 ... Mit Mockdaten arbeiten ... 368 9. Beispielentwicklung einer Portalanwendung ... 371 9.1 ... User-Interface-Design entwerfen ... 371 9.2 ... Datenmodell erstellen ... 379 9.3 ... Benutzeroberfläche implementieren ... 380 10. Beispielentwicklung einer SAP-Fiori-App ... 447 10.1 ... Mobile Lösungen mit SAPUI5 entwickeln ... 449 10.2 ... Anwendungsbeispiel ... 452 10.3 ... Bereitstellung über das SAP Fiori Launchpad ... 464 Über den Autor ... 475 Index ... 477
Pro C# 10 with .NET 6
Welcome to the most comprehensive foundational guide available on the topic of C# coding and .NET. This book goes beyond “do this, to achieve this” to drill down into the core stuff that makes a good developer, great. This expanded 11th edition delivers loads of new content on Entity Framework, Razor Pages, Web APIs and more. You will find the latest C# 10 and .NET 6 features served up with plenty of “behind the curtain” discussion designed to expand developers’ critical thinking skills when it comes to their craft. Coverage of ASP.NET Core, Entity Framework Core, and more sits alongside the latest updates to the new unified .NET platform, from performance improvements to Windows Desktop apps on .NET 6, updates in XAML tooling, and expanded coverage of data files and data handling. Going beyond the latest features in C# 10, all code samples are rewritten for this latest release.Dive in and discover why this essential classic is a favorite of C# developers worldwide. Gain a solid foundation in object-oriented development techniques, attributes and reflection, generics and collections, and numerous advanced topics not found in other texts (such as CIL opcodes and emitting dynamic assemblies). PRO C# 10 WITH .NET 6 will build your coding confidence putting C# into practice, and exploring the .NET universe and its vast potential on your own terms.WHAT YOU WILL LEARN* Explore C# 10 features and updates in records and record structs, global and implicit using directives, file level namespaces, extended property patterns, and more* Develop applications with C# and modern frameworks for services, web, and smart client applications* Hit the ground running with ASP.NET Core web applications using MVC and Razor Pages, including view components, custom tag helpers, custom validation, GDPR support, and areas* Build ASP.NET RESTful services complete with versioning, enhanced swagger, and basic authentication* Embrace Entity Framework Core for building real-world, data-centric applications, with deeply expanded coverage new to this edition including SQL Server temporal table support* Dive into Windows Desktop Apps on .NET 6 using Windows Presentation Foundation* Understand the philosophy behind .NET* Discover the new features in .NET 6, including single file applications, smaller container images, and moreWHO THIS BOOK IS FORDevelopers of any level who want to either learn C# and .NET or want to take their skills to the next level.“Amazing! Provides easy-to-follow explanations and examples. I remember reading the first version of this book; this is a ‘must-have’ for your collection if you are learning .NET!”– Rick McGuire, Senior Application Development Manager, Microsoft“Phil is a journeyman programmer who brings years of experience and a passion for teaching to make this fully revised and modernized ‘classic’ a ‘must-have’. Any developer who wants full-spectrum, up-to-date coverage of both the C# language and how to use it with .NET and ASP.NET Core should get this book.”– Brian A. Randell, Partner, MCW Technologies and Microsoft MVPANDREW TROELSEN has more than 20 years of experience in the software industry. Over this time he has worked as a developer, educator, author, public speaker, and now team lead and lead engineer. He is the author of numerous books in the Microsoft universe. He holds a master of science degree in software engineering (MSSE) from the University of St. Thomas and another in computational linguistics (CLMS) from the University of Washington.PHIL JAPIKSE is an international speaker, Microsoft MVP, ASPInsider, Professional Scrum Trainer, and a passionate member of the developer community. He is the lead director of the Cincinnati .NET User Group and the Cincinnati Software Architect Roundtable, and he founded the CincyDeliver conference, Currently, he works as a Director of Consulting and Enterprise Architect. Follow him on his blog (skimedic.com) or on Twitter @skimedic.Part 1: Introducing C# and .NET 61 Introducing C# and .NET (Core) 62 Building C# ApplicationsPart 2: Core C# Programming3 Core C# Programming Constructs, Part 14 Core C# Programming Constructs, Part 2Part 3: Object Oriented Programming with C#5 Understanding Encapsulation6 Understanding Inheritance and Polymorphism7 Understanding Structured Exception Handling8 Working with Interfaces9 Understanding Object LifetimePart 4: Advanced C# Programming10 Collections and Generics11 Advanced C# Language Features12 Delegates, Events, and Lambda Expressions13 LINQ To Objects14 Processes, AppDomains, and Load Contexts15 Multithreaded, Parallel, and Async ProgrammingPart 5: Programming with .NET Core Assemblies16 Building and Configuring Class Libraries17 Type Reflection, Late Binding, Attributes, and Dynamic Types18 Understanding CIL and the Role of Dynamic AssembliesPart 6: File Handling, Object Serialization, and Data Access19 File I/O and Object Serialization20 Data Access with ADO.NETPart 7: Entity Framework Core21 Introducing Entity Framework Core22 Exploring EF Core23 Build a Data Access Layer with Entity Framework Core24 Test Driving the Autolot Data Access LayerPart 8: Windows Client Development25 Introducing Windows Presentation Foundation and XAML26 WPF Controls, Layouts, Events, and Data Binding27 WPF Graphics Rendering Services28 WPF Resources, Animations, Styles, and Templates29 WPF Notifications, Validations, Commands, and MVVMPart 9: ASP.NET Core30 Introducing ASP.NET Core31 Diving into ASP.NET Core32 RESTful Services with ASP.NET Core33 Web Applications using MVC34 Web Applications using Razor Pages
Das DevOps-Handbuch (2. Auflage)
Teams, Tools und Infrastrukturen erfolgreich umgestaltenDie IT ist heute das Herzstück eines jeden Unternehmens, unabhängig vom Geschäftsmodell oder Produkt. DevOps-Praktiken werden daher immer häufiger nicht nur in der IT-Abteilung genutzt, sondern im gesamten Unternehmen eingeführt. Diese Entwicklung veranschaulichen auch die zahlreichen neuen Fallstudien beispielsweise von Adidas oder American Airlines, um die die Neuauflage dieses Standardwerks erweitert wurde.Das DevOps-Handbuch – jetzt aktualisiert und durch neueste Erkenntnisse und Methoden ergänzt – erläutert, wie die DevOps-Philosopie praktisch implementiert wird: Sie lernen konkrete Tools und Techniken kennen, die Ihnen helfen, Software schneller und sicherer zu produzieren. Zudem stellt das Autorenteam Ihnen Maßnahmen vor, die die Zusammenarbeit aller Abteilungen optimieren, die Arbeitskultur verbessern und die Profitabilität Ihres Unternehmens steigern.Die 2. Auflage wurde vollständig aktualisiert und durch die neuesten Forschungsergebnisse und 15 neue Case Studies erweitert.Themen des Buchs sind: Die Drei Wege: Die obersten Prinzipien, von denen alle DevOps-Maßnahmen abgeleitet werdenEinen Ausgangspunkt finden: Eine Strategie für die DevOps-Transformation entwickeln, Wertketten und Veränderungsmuster kennenlernen, Teams schützen und fördernFlow beschleunigen: Den schnellen Fluss der Arbeit von Dev hin zu Ops ermöglichen durch eine optimale Deployment-Pipeline, automatisierte Tests, Continuous Integration und Continuous DeliveryFeedback verstärken: Feedback-Schleifen verkürzen und vertiefen, Telemetriedaten erzeugen und Informationen unternehmensweit sichtbar machenKontinuierliches Lernen ermöglichen: Eine »Just Culture« aufbauen und ausreichend Zeit reservieren, um das firmenweite Lernen zu fördern
Java - die Neuerungen in Version 17 LTS, 18 und 19
Dieses Buch von Michael Inden eignet sich für alle, die ihr Java-Wissen auf den neuesten Stand bringen und es durch eine Vielzahl an Übungen festigen möchten. Es beschreibt alle wichtigen Neuerungen in Java 17 – der aktuellen LTS-Version – sowie in den brandaktuellen Versionen 18 und 19.»Java – die Neuerungen in Version 17 LTS, 18 und 19« behandelt alle wesentlichen Änderungen der aktuellen Java-Versionen. Einen Schwerpunkt bildet die Beschreibung einer Vielzahl an Syntaxverbesserungen. Beispiele sind die prägnantere Syntax bei switch sowie die mehrzeiligen Strings und records, welche die Definition von Werteklassen erleichtern. Auch das immer populärer werdende Pattern Matching für instanceof und switch wird vorgestellt. Nicht nur in der Syntax, sondern auch in den APIs finden sich einige Neuerungen, etwa der HTTP/2-Support sowie diverse Detailverbesserungen, beispielsweise im Stream-API. Schließlich werden nennenswerte Neuerungen in der JVM beschrieben, unter anderem Direct Compilation, die JShell zum interaktiven Ausprobieren, JMH zum Erstellen von Microbenchmarks sowie jpackage zum Bereitstellen von installierbaren Distributionen.Zielgruppe: Java-Programmierer*innenSoftwareentwickler*innenAutor: Dipl.-Inform. Michael Inden ist Oracle-zertifizierter Java-Entwickler. Nach seinem Studium in Oldenburg hat er bei diversen internationalen Firmen in verschiedenen Rollen etwa als Softwareentwickler, -architekt, Consultant, Teamleiter, CTO sowie Leiter Academy gearbeitet. Nach rund 1,5 Jahren als freiberuflicher Autor und Trainer ist er seit Januar 2022 als Head of Development in Zürich tätig.Michael Inden hat über zwanzig Jahre Berufserfahrung beim Entwurf komplexer Softwaresysteme gesammelt und an diversen Fortbildungen sowie mehreren Java-One-Konferenzen teilgenommen. Sein besonderes Interesse gilt dem Design qualitativ hochwertiger Applikationen sowie dem Coaching. Sein Wissen gibt er gerne als Trainer in internen und externen Schulungen und auf Konferenzen weiter, etwa bei der JAX/W-JAX, JAX London, Oracle Code One, ch.open sowie bei der Java User Group Switzerland.
Teach Yourself VISUALLY Python
A SIMPLE, STRAIGHTFORWARD, AND HANDS-ON ROADMAP TO THE WORLD OF COMPUTER PROGRAMMING WITH PYTHONTeach Yourself VISUALLY: Python is your personal guide to getting you started in programming. As one of the world's most popular—and most accessible—coding languages, Python is your gateway into the wide and wonderful world of computer science. This hands-on guide walks you through Python step by clearly illustrated step, from writing your very first Python code in a terminal window or the VS Code app through to creating your own lists, dictionaries, and custom classes.In the book, you’ll learn to:* Install Python and the tools you need to work with it on Windows, macOS, and Linux* Work with files and folders, manipulate text, and create powerful functions that do exactly what you want* Write clean code that makes decisions effectively, repeats actions as needed, and handles any errors that occurA must-have resource for aspiring programmers starting from the very beginning, Teach Yourself VISUALLY: Python is also an indispensable handbook for programmers making a transition from another language.CHAPTER 1 GETTING READY TO WORK WITH PYTHONUnderstanding What Python Is and Does 4Choose the Right Version of Python 6Install Python on Windows 8Install Python on the Mac 12Install Python on Linux If Necessary 14Learn About Development Tools for Python 16Download and Install Visual Studio Code 20Get Started with Visual Studio Code and Apply a Theme 22Install Visual Studio Code Extensions for Python 24Configure Visual Studio Code for Working with Python 26CHAPTER 2 WRITING AND RUNNING YOUR FIRST PYTHON CODEUnderstanding the main() Function 30Create and Save a New Script in Visual Studio Code 32Write and Run Code in Visual Studio Code 34Execute Python Commands in a Terminal Window 38Run a Python Script in a Terminal Window 39Understanding Comments in Python 40Add Comments to Your Code 42Grasp Importing Modules and Objects 44Import Modules and Use Their Methods 48CHAPTER 3 GETTING STARTED WITH VARIABLESUnderstanding Variables and Their Usage 52Understanding Python’s Data Types 54Work with Integers 58Work with Floating‐Point Values 60Work with Boolean Values 62Work with Tuples 64Work with Sets 66Start Working with Strings 68Start Working with Lists 70Start Working with Dictionaries 72Convert Data from One Type to Another 74CHAPTER 4 WORKING WITH FILES AND DIRECTORIESUnderstanding Working with Files and Directories 78Load the os Module and List Files and Directories 80Navigate Among Directories 82Create and Delete Directories 84Rename, Move, and Copy Files and Directories 88Get Information About the User and System 92Split a File Path into Its Components 94Understanding Python’s open() Function 96Understanding Python’s Ways of Closing Files 97Open a File If It Exists; If Not, Create It 98Check an Open File’s Status and Close It 100Write Data to a File 102Open a File for Both Reading and Writing 104Append Data to a File 106Read a Text File 108CHAPTER 5 WORKING WITH PYTHON’S OPERATORSMeet the Arithmetic Operators 112Work with the Arithmetic Operators 114Meet the Assignment Operators 116Work with the Assignment Operators 117Meet the Comparison Operators 118Work with the Comparison Operators 119Meet the Logical Operators 120Work with the Logical Operators 121Meet the Identity Operators 122Work with the Identity Operators 123Meet the Membership Operators 124Work with the Membership Operators 125Meet the Bitwise Operators 126Work with the Bitwise Operators 127CHAPTER 6 MAKING DECISIONS WITH IF STATEMENTSLearn the Essentials of if Statements 130Understanding the if Statement 132Create an if Statement 133Understanding the if else Statement 134Create an if else Statement 135Understanding the if elif Statement 136Create an if elif Statement 137Understanding the if elif else Statement 138Create an if elif else Statement 139Understanding Nested if Statements 140Create Nested if Statements 141Chapter 7 Repeating Actions with LoopsUnderstanding Python’s Loops 144Understanding How for Loops Work 146Create for Loops 148Understanding How while Loops Work 150Create while Loops 152Understanding break Statements in Loops 154Using a break Statement to Exit a Loop Early 155Understanding continue Statements in Loops 156Using a continue Statement in a Loop 157Understanding else Statements in Loops 158Using an else Statement in a Loop 159Understanding Loop Nesting 160Nest Loops to Create Complex Repetition 161CHAPTER 8 WORKING WITH FUNCTIONSUnderstanding Functions and Their Syntax 164Understanding Function Parameters and Returns 166Using Python’s Built‐In Functions 168Create a Function with Parameters and a Return 172Create a Function with a Parameter But No Return 173Create a Function with No Parameters But a Return 174Create a Function with No Parameters and No Return 176Create a Function That Returns Multiple Values 177Create a Function with Optional Parameters 178CHAPTER 9 WORKING WITH TEXTLearn the Essentials of Strings 182Create Single‐Line Strings 184Create Multiline Strings 186Meet Python’s String Methods 188Return Information About a String 190Transform and Clean Up a String 192Return Part of a String via Slicing 194Concatenate and Repeat Strings 196Search for One String Inside Another String 198Check and Change String Capitalization 200Meet Python’s Tools for Building Strings 204Build Strings with the Interpolation Operator 210Build Strings with the .format Method 212Build Strings with f‐Strings 214Build Strings with Template Strings 216CHAPTER 10 HANDLING ERRORSUnderstanding the Various Types of Errors 220Identify Common Python Errors 222Meet the try except Block 224Cause Errors and Trap Exceptions 226Raise an Exception Manually 228Add an else Block or a finally Block 229Create Nested try except Blocks 230Create Custom Exceptions 232CHAPTER 11 WORKING WITH LISTS AND DICTIONARIESUnderstanding Lists and Their Use 236Create a List 238Meet Python’s List Methods 239Add Items to a List 240Remove Items from a List 242Locate Items and Access Data in a List 244Sort the Items in a List 246Understanding Dictionaries and Their Use 248Create a Dictionary and Return Values 250Meet Python’s Dictionary Methods 251Create a Dictionary from an Existing Iterable 252Add Key/Value Pairs to a Dictionary 254Remove Key/Value Pairs from a Dictionary 256Return Keys and Values from a Dictionary 258CHAPTER 12 WORKING WITH CLASSESUnderstanding Classes and Instances 262Create a Class and Instantiate Instances 264Understanding Class and Instance Attributes 266Set Class and Instance Attributes 268Grasp Class, Instance, and Static Methods 270Create an Instance Method 274Create a Class Method 275Create a Static Method 276Review the Class’s Code 277Index 278
Java EE to Jakarta EE 10 Recipes
Take a problem-solution approach for programming enterprise Java or Java EE applications and microservices for cloud-based solutions, enterprise database applications, and even small business web applications. _Java EE to Jakarta EE 10 Recipes_ provides effective, practical, and proven code snippets that you can immediately use to accomplish just about any task that you may encounter. You can feel confident using the reliable solutions that are demonstrated in this book in your personal or corporate environment.Java EE was made open source under the Eclipse Foundation, and Jakarta EE is the new name for what used to be termed the Java Platform, Enterprise Edition. This book helps you rejuvenate your Java expertise and put the platform’s latest capabilities to use for quickly developing robust applications. If you are new to Jakarta EE, this book will help you learn the features of the platform and benefit from one of the most widely used and powerful technologies available for cloud-native enterprise application development today.Examples in this book highlight Jakarta EE’s capabilities, helping you to build streamlined and reliable applications using the latest in Java technologies. The book takes a problem-solution approach in which each section introduces a common programming problem, showing you how to solve that problem in the best possible way using the latest features in Jakarta EE. Solutions in the form of working code examples are presented that you can download and use immediately in your own projects. Clear descriptions are provided to help you understand and learn to build further on the solutions provided.This is the ideal book for the code-focused programmer interested in keeping up with the future of enterprise development on the Java Platform.WHAT YOU WILL LEARN* Develop enterprise java applications using the latest open-source Jakarta EE platform* Create great-looking user interfaces using Jakarta Servlets, Jakarta Server Pages, Jakarta Server Faces and the Eclipse Krazo framework (an implementation of Jakarta MVC)* Build database applications using Jakarta NoSQL, Jakarta Persistence, and Jakarta Enterprise Beans.* Develop enterprise grade applications using Context & Dependency Injection, and Jakarta RESTFul web services* Automate testing through cohesive test suites built on Arquillian for Jakarta EE applications* Build loosely coupled distributed applications using Jakarta Messaging* Deploy microservices applications in cloud environments using Docker* Secure applications utilizing the Jakarta EE Security APIWHO THIS BOOK IS FORJava developers interested in quickly finding effective and proven solutions without reading through a lengthy manual and scrubbing for techniques.Josh Juneau is a professional application developer who enjoys working with database technology and learning new languages. He is a seasoned professional in Java SE and Java EE development, and brings strong database experience to the table as well. His interest in Java for developing web-based solutions has led to a passion of Java technology as a whole, including other languages on the JVM. In his spare time, Josh enjoys spending time with his wife and five wonderful children at his home in rural Illinois.Tarun Telang is an experienced Software Engineer with expertise in Web, Mobile & Cloud-based enterprise software solution development for world-renowned software companies including Microsoft, Oracle, SAP, BlackBerry, and Polycom. He is a hands-on technologist with 15+ years of IT industry experience with a strong business understanding and the ability to architect complex software solutions. He has been presenting in conferences related to software technology, writing technical articles and blogs since more than 10 years now. Tarun has also done 1 year of teaching for topics like Database Concepts, Data Structures & Programming Languages to Computer Science Engineering students. he has these certifications: Oracle Certified Programmer for Java 6.0 Platform, SAP Certified Development Consultant for NetWeaver 04 Java Web Application Development, SAP Certified Application Management Expert for End-to-End Root Cause Analysis - Solution Manager 4.0, and NASBA Certification on Remote Work.Revision Notes from AuthorBased on the book preview, below is the list of changes/updates I see relevant for the next revisions of this book - Jakarta EE 10 Recipes.----------------------------------Introduction:* Adding following details for Jakarta EE 9, 9.1 and 10 releases like timelines and theme.* Updating instructions for enabling Jakarta EE support using NetBeans IDE* Adding instructions for using the following IDE for building Jakarta EE applications.* Eclipse IDE* Visual Studio Code* Providing instructions for installing the following build tools for Jakarta EE* Maven* GradleAll Chapters:* Rename to chapter title Servlets and Jakarta Server Pages* Updating terminologies as below:* JavaServer Pages(JSP) to Jakarta Server Pages* JavaServer Faces(JSF) to Jakarta Faces,* JavaMail to Jakarta Mail* …* Reworking and verifying the code examples by performing the following modifications* Updating import statements in all code samples from javax.* to jakarta.*.* Updating code to make use of the latest Java 11 features* Updating instructions for enabling Jakarta EE support using NetBeans IDE* Adding instructions for using the following IDE as well for building Jakarta EE applications.* Eclipse IDE* Visual Studio Code* Ensuring the code can be executed in the latest releases of the following servers* Open Liberty, WildFly and GlassFish servers as are the flag bearers for Jakarta EE compliance.* Also verifying the code with other servers based on their availability with support for latest functionality like Payara or Apache TomEE or Oracle Weblogic and provide any specific instructions in case applicable.Note: As I would dig deeper into the content will be able to suggest more pointsChapter 1: Servlets and JavaServer Pages* Rename to chapter title Servlets1-8 (Adding content about - Improving performance with server push)* Adding a recipe for adding a user authentication to Servlets.* Adding a recipe for defining servlet behaviour based on user authorization* Adding more recipes for the following topics* session tracking andHandling cookies* HTTP Session handling* Servlet Filters / URL Redirections* . Move JSP related recipes to a separate chapterNew Chapter 2: Creating a New Chapter on Jakarta Server Pages* Adding recipes for the following topics* Handling file uploads* Add recipe for Implementing Internationalization* Managed Bean 2.0Chapter 2: JavaServer Faces Fundamentals* Rename to chapter title Jakarta Faces Fundamentals* Updating code as per Jakarta Faces 4.0 specification* Adding recipes for the following topics* Externalizing strings using resource bundlesChapter 3: Advanced JavaServer Faces* Rename to chapter title Advanced Jakarta FacesChapter 4: Eclipse Krazo* renaming it to Jakarta MVC and updating it with content for Jakarta MVC.Chapter 5: JDBC with Jakarta EE* Adding a Chapter with recipes on Jakarta TransactionsChapter 6: Object-Relational Mapping* Adding sections about migrating from Hibernate ORM 5.5 to Jakarta Persistence.Chapter 7: Jakarta NoSQL* Add recipes related to working with graph databases (like neo4j).Chapter 8: Enterprise JavaBeans* Updating recipes as Jakarta Enterprise Beans 4.0 specifications.Chapter 9: Java Persistence Query Language* Rename chapter title to Jakarta Persistence Query LanguageChapter 10: Bean Validation* Updating recipes as per Jakarta Bean validation 3.0 standard* Adding recipes about Migration from Hibernate ValidatorChapter 11: Contexts and Dependency Injection* Updates based on the latest CDI support* Adding recipes related to* Interceptor bindingsDecorators* Firing EventsChapter 12: Java Message ServiceRename to Jakarta MessagingUpdating recipes as per Jakarta Messaging 3.0Chapter 13: RESTful Web ServicesAdding a Chapter on migrating from Spring would also make sense as the upcoming release of Spring Framework 6 will align with Jakarta EE starting Q3 2021Add recipes for* Handling various status codes in HTTP responses.Chapter 14: WebSockets and JSONContent on WebSockets would be better suited after chapter* Restructuring sections on Web Sockets from Chapter 14 to Chapter 2 after HTTP/2 Server Push in Servlets changes* Adding a chapter on Jakarta ConcurrencyChapter 15: SecurityRename to Jakarta SecurityAdding recipes for* The authentication mechanism for Client-Cert and Digest* Support for OpenID, OAuth and JWTChapter 16: Concurrency and Batch* Updating recipes as per Jakarta Concurrency 3.0Chapter 17: Deploying to Containers* Adding topics related to running microservices targeted at smaller runtimes as per Jakarta Core Profile standard1. Servlets and Java Server Pages2. JavaServer Faces Fundamentals3. Advanced JavaServer Faces4. Eclipse Krazo5. JDBC With Jakarta EE6. Object-Relational Mapping7. Jakarta NoSQL8. Enterprise JavaBeans9. Java Persistence Query Language10. Bean Validation11. Contexts and Dependency Injection12. Java Message Service13. RESTful Web Services14. WebSockets and JSON15. Security16. Concurrency and Batch17. Deploying to Containers
Android-Apps programmieren lernen für Dummies
Sie wollen programmieren lernen, um eigene Apps für Ihr Android-Gerät zu entwickeln? Dann sind Sie hier richtig. Dieses Buch ist drei Bücher in einem: Sie lernen Java, begreifen die objektorientierte Programmierung und erhalten eine Einführung in die Android-App-Entwicklung. Wichtige Themen wie die Ansteuerung des Displays oder der Umgang mit der Grafik, den Sensoren und GPS werden Ihnen an kleinen Apps vorgeführt. Nebenher erfahren Sie noch so einiges über die Spieleprogrammierung und sogar, wie Sie JSON-Daten aus dem Internet in eine App einbinden. Freuen Sie sich auf die spannende Reise, die vor Ihnen liegt!Arnold Willemer ist Programmierer und Administrator mit mehr als 30 Jahren Berufserfahrung und Dozent an der Hochschule Flensburg. Er hat mehrere erfolgreiche Computer-Bücher geschrieben, die sich durch ihre Verständlichkeit und ihren lockeren Stil auszeichnen.
Generic Data Structures and Algorithms in Go
Advance your understanding of generic data structures and algorithms and their applications using Go and the effective use of concurrency. You are invited on a journey that aims to improve your programming and problem-solving skills. This book takes you to the next step by showing how to get your programs to work efficiently as well as correctly.As you explore many data structures and the algorithms and applications associated with them, you'll focus on the trade-offs between speed and storage and the benefits of deploying concurrency when appropriate. This book will demonstrate the huge increases in application performance that are possible. The presentation of classic data structures and techniques of algorithm design (greedy, divide and conquer, branch-and-bound to name a few) provides an essential foundation and toolkit for problem solving. But this book goes further by presenting heuristic algorithms and their implementations for solving computationally intractable combinatoric optimization problems such as the travelling salesperson problem. Simulated annealing and genetic algorithms are among the techniques used.The consistent style of coding used throughout this book exploits Go’s ability to implement abstract, generic and constrained generic data types without the use of classes. Although some familiarity with Go is assumed, this book should advance your ability to use Go to tackle server-side applications, games, machine learning, information retrieval and other application domains where speed and storage efficiency is essential.WHAT YOU'LL LEARN* Explore classical data structures and algorithms aimed at making your applications run faster or require less storage* Use the new generic features of Go to build reusable data structures* Utilize concurrency for maximizing application performance* See the power of heuristic algorithms for computationally intractable problems* Enhance and improve your Go programming skillsWHO THIS BOOK IS FORPracticing Go software developers and students who wish to advance their programming and problem-solving skills and experience the excitement and see the benefits of using generic data structures and algorithms that utilize concurrency whenever possible.RICHARD WIENER, PH.D. authored or co-authored 22 professional, software development and computer-science textbooks published by Wiley, Addison-Wesley, Prentice-Hall, Cambridge University Press and Thompson. Served as founding Editor-in-Chief of the Journal of Object-Oriented Programming for 12 years and later, founding Editor-in-Chief of the Journal of Object Technology for 9 years. Worked as Associate Professor of Computer Science at the University of Colorado, Colorado Springs (UCCS) from 1977-2012. Served as Department Chair during last four years at UCCS. Served as consultant and software developer for IBM, HP, Boeing, Textronix, DEC and many other companies. Presented industry short-courses all over the world from 1980 to 2006. Earned BS and MS in Electrical Engineering from City University of New York and Ph.D. from Polytechnic Institute of New York.1. A Tour Of Generics and Concurrency In Go2. Algorithm Efficiency – Sorting and Searching3. Abstract Data Types: OOP Without Classes in Go4. ADT In Action: Game Of Life5. Stacks6. Queues and Lists7. Hash Tables8. Binary Trees9. Binary Search Tree10. AVL Trees11. Heap Trees12. Red Black Trees13. Expression Trees14. Ecological Simulation With Concurrency15. Dynamic Programming16. Graph Structures17. Travelling Salesperson Problem18. Branch and Bound Solution to TSP19. Simulated Annealing Heuristic Solution to TSP20. Genetic Algorithm for TSP21. Neural Networks and Machine Learning.
Git und SAP
Nutzen Sie das moderne Versionsmanagement für Ihre SAP-Projekte! In diesem Buch erfahren Sie, wie Git in die Entwicklungsumgebungen für SAPUI5 oder ABAP integriert ist. Sie lernen, wie Sie Git-Befehle direkt in SAP Business Application Studio, ABAP Development Tools oder SAP Web IDE absetzen, Repositorys klonen und Branches verwalten. Ihre Entwicklungsteams werden nicht mehr anders arbeiten wollen! Aus dem Inhalt: So funktioniert GitAnbieter von Git-ClientsCloud- und On-Premise-DeploymentabapGitGit in der SAPUI5-EntwicklungGit in der Cloud-EntwicklungGit in der SAP-HANA-EntwicklungSAP Business Application StudioVisual Studio CodeABAP Development ToolsSAP Web IDE for SAP HANASAP Continuous Integration and DeliveryIntegration mit Jenkins und Azure DevOps Einführung ... 13 1. Einführung in Git ... 17 1.1 ... Herkunft von Git ... 18 1.2 ... Vergleich mit anderen Versionsverwaltungssystemen ... 19 1.3 ... Verteilte Entwicklung mit Git ... 26 1.4 ... Git im SAP-Umfeld ... 28 1.5 ... Git in DevOps-Projekten ... 38 1.6 ... Zusammenfassung ... 44 2. Technische Grundlagen ... 45 2.1 ... Lokales und Remote-Repository ... 46 2.2 ... Die wichtigsten Git-Befehle ... 53 2.3 ... Git-CLI ... 70 2.4 ... Das Arbeiten mit dem Git-CLI ... 73 2.5 ... Konflikte lösen ... 95 2.6 ... Weitere hilfreiche Befehle ... 99 3. Deployment-Optionen und Anbieter von Git-Clients ... 103 3.1 ... Cloud- oder On-Premise-Deployment ... 104 3.2 ... SAP Git Service in der Neo-Umgebung ... 110 3.3 ... GitHub ... 121 3.4 ... Bitbucket ... 129 3.5 ... GitLab ... 134 3.6 ... Ein On-Premise-Git-Repository über den Cloud Connector an die SAP BTP anbinden ... 140 4. Git in der SAPUI5-Entwicklung ... 149 4.1 ... Erstellen eines Git-Repositorys ... 150 4.2 ... Einbindung in die SAP Web IDE ... 152 4.3 ... Einbindung in SAP Business Application Studio ... 160 4.4 ... Einbindung in Visual Studio Code ... 169 5. Git in der ABAP-Entwicklung ... 177 5.1 ... abapGit ... 177 5.2 ... Einbindung in Eclipse ... 207 6. Git in der Cloud-Entwicklung ... 217 6.1 ... Einführung in das SAP Cloud Application Programming Model ... 218 6.2 ... Einbindung in SAP Business Application Studio ... 220 6.3 ... Einbindung in Visual Studio Code ... 230 7. Git in der SAP-HANA-Entwicklung ... 241 7.1 ... Einführung in SAP HANA XSA ... 241 7.2 ... Einbindung in die SAP Web IDE für SAP HANA ... 243 7.3 ... Einbindung in SAP Business Application Studio ... 258 8. Continuous Delivery und Continuous Integration ... 271 8.1 ... Einführung ... 271 8.2 ... SAP Continuous Integration and Delivery ... 285 8.3 ... Integration mit weiteren Tools ... 311 8.4 ... Zusammenfassung ... 328 Anhang ... 331 A ... Die wichtigsten Git-Befehle ... 331 Die Autoren ... 335 Index ... 337
SQL - kurz & gut (3. Auflg.)
Wenn Sie SQL bei Ihrer täglichen Arbeit als Datenanalyst:in, Data Scientist oder Data Engineer verwenden, ist dieses beliebte Taschenbuch das ideale Nachschlagewerk für Sie. Beschrieben werden die wichtigsten Funktionen von SQL und deren Einsatz in Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL und SQLite. Zahlreiche Beispiele verdeutlichen zudem die vielfältigen Möglichkeiten der Sprache.In dieser aktualisierten und deutlich erweiterten Ausgabe zeigt Alice Zhao, wie diese fünf Datenbankmanagementsysteme die SQL-Syntax für Abfragen und für Änderungen an einer Datenbank implementieren. Sie finden Näheres zu Datentypen und Konvertierungen, zur Syntax regulärer Ausdrücke, zu Fensterfunktionen, Pivoting und Unpivoting und vieles mehr.- Schlagen Sie schnell nach, wie Sie bestimmte Aufgaben mit SQL ausführen- Nutzen Sie die Syntaxbeispiele des Buchs für Ihre eigenen Abfragen- Passen Sie SQL-Abfragen so an, dass sie auf den fünf verbreitetsten Datenbankmanagementsystemen funktionieren- Neu: Verbinden Sie Python und R mit einer relationalen Datenbank- Neu: Erhalten Sie in dem Kapitel »Wie mache ich …?« Antworten auf häufig gestellte Fragen zu SQLZielgruppe:Data ScientistsDatenanalyst*innenalle, die mit Daten und SQL zu tun habenAutorin:Alice Zhao ist Data Scientist und liebt es, komplexe Dinge leicht verständlich zu erklären. Als Senior Data Scientist bei Metis und als Mitbegründerin von Best Fit Analytics hat sie zahlreiche Kurse zu SQL, Python und R gegeben. Ihre sehr gut bewerteten technischen Tutorials auf YouTube sind dafür bekannt, gleichermaßen praktisch, unterhaltsam und visuell ansprechend zu sein.In ihrem Blog „A Dash of Data“ schreibt sie über Analytics und Popkultur. Ihre Arbeit wurde bereits in der Huffington Post, Thrillist und Working Mother veröffentlicht. Sie hat auf einer Vielzahl von Konferenzen über Themen wie Natural Language Processing und Datenvisualisierung gesprochen und hat einen Master of Science in Analytics und einen Bachelor of Science in Elektrotechnik erworben, beide von der Northwestern University.
C++ Lernen und professionell anwenden
Für Studium, Ausbildung und BerufSie möchten die Programmiersprache C++ erlernen und sind Anfänger? Dann ist dieses Buch richtig für Sie! Es richtet sich besonders an alle, die C++ in Studium, Ausbildung oder Beruf lernen und keine Vorkenntnisse in der Programmierung mit C++ haben.Die Ausrichtung des Studiengangs spielt dabei keine Rolle. Alle Themen werden fachunabhängig erläutert. Die Übungen und praktischen Beispiele decken viele unterschiedliche Anwendungsbereiche ab, so dass Sie auf die verschiedensten Aufgaben optimal vorbereitet sind.Sie lernen die elementaren Sprachkonzepte von C++ und werden schrittweise bis zur Entwicklung professioneller C++-Programme geführt. In den Beispielen zeigen die Autoren die ganze Breite des Anwendungsspektrums auf. Dabei basiert die Sprachbeschreibung auf dem ISO-Standard, der von allen gängigen Compilern unterstützt wird (Visual C++, GNU C++ etc.).Für den professionellen Einsatz sind in den hinteren Kapiteln Themen wie Smart Pointer, Multithreading und Algorithmen der Standard-Template-Library beschrieben. Die Übungen in jedem Kapitel helfen Ihnen, Ihr Wissen zu festigen und sich auf Prüfungen vorzubereiten.Aus dem Inhalt:Datentypen KontrollstrukturenOperatorenMakrosFunktionenVektorenStringsMatrizenReferenzen und ZeigerSpeicherreservierung zur LaufzeitDynamische Arrays und Move-SemantikKlassenVererbung und PolymorphieException-HandlingDateiverarbeitung und portabler Zugriff auf das DateisystemTemplates und ContainerSmart PointerMultithreadingAlgorithmen der StandardbibliothekUmfassendes GlossarÜber die Autoren:Prof. Dr. Ulla Kirch unterrichtet an der FH München und Dr. Peter Prinz ist Software-Entwickler. Sie haben bereits zahlreiche Bücher zu C und C++ geschrieben.
Java für Kids (8. Auflage)
Die Programmiersprache Java lernen ohne Vorkenntnisse. Kleine Spiele programmieren und sich Schritt für Schritt mit Java vertraut machen. Mit Fragen und Aufgaben am Ende jedes Kapitels.Java - wer denkt da nicht an eine Insel, auf der es heiß und feucht ist, mit Vulkanen, viel Wald und seltenen Tieren? Du nicht? Du denkst an eine Programmiersprache? Dann bist du hier richtig! In diesem Buch erfährst du, dass diese Sprache einiges zu bieten hat, und mit der Entwicklungsumgebung Eclipse schaffst du den Einstieg in Java spielend!Hans-Georg Schumann zeigt dir, wie du mit Java erste Programme schreibst und welche Zutaten du dazu benötigst: Variablen, Kontrollstrukturen, Klassen und mehr. Schritt für Schritt werden die Quelltexte umfangreicher bis hin zur objektorientierten Programmierung und dem Einsatz von Java-Komponenten. Schnell hast du ein erstes Lotto-Spiel programmiert, dein Programm mit Buttons und Häkchen professionell ausgestattet und den Rechner dazu gebracht, Quizfragen zu stellen. Du kannst mit Java aber auch bunte Grafiken erstellen oder Figuren animieren. Zudem macht das Programmieren von Spielen wie Hang-Man oder Stein-Schere-Papier nicht nur dir als Programmierer oder Programmiererin großen Spaß.Das ist auch nicht so kompliziert, wie es sich anhört! Denn alles wird genau erklärt und am Ende der Kapitel noch einmal zusammengefasst.Über den Autor:Hans-Georg Schumann war Informatik- und Mathematiklehrer an einer Gesamtschule. Er hat viele erfolgreiche Bücher in der mitp-Buchreihe »... für Kids« geschrieben.
DevOps in Python
Take advantage of Python to automate complex systems with readable code. This new edition will help you move from operations/system administration into easy-to-learn coding.You'll start by writing command-line scripts and automating simple DevOps-style tasks followed by creating reliable and fast unit tests designed to avoid incidents caused by buggy automation. You’ll then move on to more advanced cases, like using Jupyter as an auditable remote-control panel and writing Ansible and Salt extensions.The updated information in this book covers best practices for deploying and updating Python applications. This includes Docker, modern Python packaging, and internal Python package repositories. You'll also see how to use the AWS API, and the Kubernetes API, and how to automate Docker container image building and running. Finally, you'll work with Terraform from Python to allow more flexible templating and customization of environments.WHAT YOU'LL LEARN* Understand operating system automation with Python* Package Python applications* Use Python as a DevOps console* Review Cloud automation with PythonWHO THIS BOOK IS FORDevOps engineer. Site Reliability Engineer, or similar (including Platform, Production, and Systems), and whose organization uses Python.Moshe has been involved in the Linux community since 1998, helping in Linux “installation parties”. Moshe has been programming Python since 1999 and has contributed to the core Python interpreter. Moshe has been a DevOps/SRE since before those terms existed, caring deeply about software reliability, build reproducibility, and other such things. They have worked in companies as small as three people and as big as tens of thousands – usually in someplace around where software meets system administration.Chapter 1 (Installing Python)Different ways to install Python:• Compiling from source• OS packages• pyenvCHAPTER 2 (PACKAGING) (31 PAGES – 11 NEW PAGES)How pip works and how to build packages.The following sections need to changeSection about pip (adds 4 pages)• Add explanation about how the resolver works• Explain pip-compilePoetry and pipenv (changes 2 pages, adds 2 pages)• Needs to be separated into two sections• Poetry section updated to reflect changes in Poetry• Pipenv section updated to reflect changes in Pipenv4setup.py and wheel (rewritten, changes 1 page, adds 2 pages)• python -m build and setup.cfg• Add details about binary wheels and manylinux• Show a complete exampleChapter 3: Interactive usageHow to use the interactive interpreter, other text-mode interactive consoles, and Jupyter.CHAPTER 4: OS AUTOMATION (16 PAGES – 4 NEW PAGES)Automating OS-related things like files and processes.Section about files (2 pages added)• Cover using struct to parse binary data• Cover pathlibNew section: low-level networking (2 pages) Cover socket, socket options, and how it relatesto TCP networking.5 CHAPTER 5: TESTING (30 PAGES – 10 NEW PAGES)Writing unit tests for DevOps code.Section about testing files (4 pages added)• Improve performance of file testing using tmpfs and preloading libraries• Add information about temporary directory context managerSection about testing networking (4 pages added)• Show how to test httpx with the WSGI support• Show how to test low-level socket networking with DISection about testing processes (2 pages changed)• Mention run and Popen• Show how to write tests with DI on run and Popen6 Chapter 6: Text manipulationHow to work with text: searching, modifiying, formatting, etc.CHAPTER 7: REQUESTS -> HTTPX (REWRITTEN – 10 NEW PAGES)• Focus on httpx instead• Cover async usageChapter 8: CryptographySymmetric and asymmetric encryption and digital signatures, and how to use them in DevOpscode.Chapter 9: ParamikoUsing paramiko to automate SSH use.Chapter 10: Salt StackUsing salt stack and writing new modules.Chapter 11: AnsibleUsing ansible and writing new modules.CHAPTER 12: DOCKER (5 NEW PAGES)• CLEAN UP EXAMPLES – THEY ARE HARD TO READ• SHOW COMPLETE EXAMPLE OF LAYERING, NOT JUST TALK IN THEORY• SHOW COMPLETE EXAMPLE OF RUNNING, NOT JUST TALK IN THEORY• ADD SECTION ABOUT HOW TO BUILD CONTAINERS FOR PYTHON APPLICATIONSChapter 13: AWSAutomating AWS using the boto3 library.NEW: CHAPTER 14: KUBERNETES (10 PAGES)CHAPTER GOAL: LEARN HOW TO AUTOMATE K8S WITH PYTHON AND HOW TO RUN PYTHON APPLICATIONS ON K8S• PACKAGING PYTHON APPLICATIONS FOR KUBERNETES– USING SECRETS– THINKING IN PODS• AUTOMATING K8S FROM PYTHON USING THE REST API• Writing k8s operators with PythonNEW: CHAPTER 15: TERRAFORM (5 PAGES)• USING THE TERRAFORM PYTHON CDK• GENERATING TERRAFORM JSON FROM PYTHON
SQL – kurz & gut (3. Auflage)
Wenn Sie SQL bei Ihrer täglichen Arbeit als Datenanalyst:in, Data Scientist oder Data Engineer verwenden, ist dieses beliebte Taschenbuch das ideale Nachschlagewerk für Sie. Beschrieben werden die wichtigsten Funktionen von SQL und deren Einsatz in Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL und SQLite. Zahlreiche Beispiele verdeutlichen zudem die vielfältigen Möglichkeiten der Sprache.In dieser aktualisierten und deutlich erweiterten Ausgabe zeigt Alice Zhao, wie diese fünf Datenbankmanagementsysteme die SQL-Syntax für Abfragen und für Änderungen an einer Datenbank implementieren. Sie finden Näheres zu Datentypen und Konvertierungen, zur Syntax regulärer Ausdrücke, zu Fensterfunktionen, Pivoting und Unpivoting und vieles mehr.Schlagen Sie schnell nach, wie Sie bestimmte Aufgaben mit SQL ausführenNutzen Sie die Syntaxbeispiele des Buchs für Ihre eigenen AbfragenPassen Sie SQL-Abfragen so an, dass sie auf den fünf verbreitetsten Datenbankmanagementsystemen funktionierenNeu: Verbinden Sie Python und R mit einer relationalen DatenbankNeu: Erhalten Sie in dem Kapitel »Wie mache ich …?« Antworten auf häufig gestellte Fragen zu SQLZielgruppe:Data ScientistsDatenanalyst*innenalle, die mit Daten und SQL zu tun habenAutorin:Alice Zhao ist Data Scientist und liebt es, komplexe Dinge leicht verständlich zu erklären. Als Senior Data Scientist bei Metis und als Mitbegründerin von Best Fit Analytics hat sie zahlreiche Kurse zu SQL, Python und R gegeben. Ihre sehr gut bewerteten technischen Tutorials auf YouTube sind dafür bekannt, gleichermaßen praktisch, unterhaltsam und visuell ansprechend zu sein.In ihrem Blog „A Dash of Data“ schreibt sie über Analytics und Popkultur. Ihre Arbeit wurde bereits in der Huffington Post, Thrillist und Working Mother veröffentlicht. Sie hat auf einer Vielzahl von Konferenzen über Themen wie Natural Language Processing und Datenvisualisierung gesprochen und hat einen Master of Science in Analytics und einen Bachelor of Science in Elektrotechnik erworben, beide von der Northwestern University.
Coding All-in-One For Dummies
THE GO-TO GUIDE FOR LEARNING CODING FROM THE GROUND-UPAdding some coding know-how to your skills can help launch a new career or bolster an old one. Coding All-in-One For Dummies offers an ideal starting place for learning the languages that make technology go. This edition gets you started with a helpful explanation of how coding works and how it’s applied in the real-world before setting you on a path toward writing code for web building, mobile application development, and data analysis. Add coding to your skillset for your existing career, or begin the exciting transition into life as a professional developer—Dummies makes it easy.* Learn coding basics and how to apply them * Analyze data and automate routine tasks on the job * Get the foundation you need to launch a career as a coder * Add HTML, JavaScript, and Python know-how to your resume This book serves up insight on the basics of coding, designed to be easy to follow, even if you’ve never written a line of code in your life. You can do this.This All-in-One includes work by expert coders and coding educators, including CHRIS MINNICK AND EVA HOLLAND coauthors of Coding with JavaScript For Dummies; NIKHIL ABRAHAM, author of Coding For Dummies and Getting a Coding Job For Dummies;JOHN PAUL MUELLER AND LUCA MASSARON, coauthors of Python for Data Science For Dummies and Machine Learning For Dummies; and BARRY BURD, author of Flutter For Dummies.INTRODUCTION 1About This Book 2Foolish Assumptions 2Icons Used in This Book 3Beyond the Book 4Where to Go from Here 4BOOK 1: GETTING STARTED WITH CODING 5CHAPTER 1: WHAT IS CODING? 7Defining What Code Is 8Following instructions 8Writing code with some Angry Birds 9Understanding What Coding Can Do for You 10Eating the world with software 10Coding on the job 12Scratching your own itch (and becoming rich and famous) 13Surveying the Types of Programming Languages 13Comparing low-level and high-level programming languages 14Contrasting compiled code and interpreted code 15Programming for the web 16Taking a Tour of a Web App Built with Code 16Defining the app’s purpose and scope 16Standing on the shoulders of giants 17CHAPTER 2: PROGRAMMING FOR THE WEB 19Displaying Web Pages on Your Desktop and Mobile Device 20Hacking your favorite news website 20Understanding how the World Wide Web works 23Watching out for your frontend and backend 24Defining web and mobile applications 25Coding Web Applications 26Starting with HTML, CSS, and JavaScript 26Adding logic with Python, Ruby, or PHP 27Coding Mobile Applications 28Building mobile web apps 29Building native mobile apps 30Deploying Web Applications in the Cloud 31CHAPTER 3: BECOMING A PROGRAMMER 33Writing Code Using a Process 34Researching what you want to build 35Designing your app 36Coding your app 37Debugging your code 38Picking Tools for the Job 39Working offline 39Working online with CodeSandbox.io 40BOOK 2: BASIC WEB CODING 43CHAPTER 1: EXPLORING BASIC HTML 45What Does HTML Do? 46Understanding HTML Structure 47Identifying elements 47Featuring your best attribute 49Standing head, title, and body above the rest 50Getting Familiar with Common HTML Tasks and Elements 52Writing headlines 53Organizing text in paragraphs 54Linking to your (heart’s) content 55Adding images 56Styling Me Pretty 58Highlighting with bold, italics, underline, and strikethrough 58Raising and lowering text with superscript and subscript 59Building Your First Website Using HTML 60CHAPTER 2: GETTING MORE OUT OF HTML 63Organizing Content on the Page 64Listing Data 66Creating ordered and unordered lists 66Nesting lists 67Putting Data in Tables 68Basic table structuring 69Stretching table columns and rows 70Aligning tables and cells 72Filling Out Forms 75Understanding how forms work 75Creating basic forms 76Practicing More with HTML 78CHAPTER 3: GETTING STYLISH WITH CSS 79What Does CSS Do? 79CSS Structure 81Choosing the element to style 81My property has value 83Hacking the CSS on your favorite website 84Common CSS Tasks and Selectors 86Font gymnastics: Size, color, style, family, and decoration 86Customizing links 90Adding background images and styling foreground images 93Getting Stylish 97Adding CSS to your HTML 97Practicing with CSS 99CHAPTER 4: NEXT STEPS WITH CSS 101Styling (More) Elements on Your Page 102Styling lists 102Designing tables 105Selecting Elements to Style 107Styling specific elements 107Naming HTML elements 112Aligning and Laying Out Your Elements 113Organizing data on the page 114Shaping the div 116Understanding the box model 117Positioning the boxes 119Writing More Advanced CSS 122CHAPTER 5: RESPONSIVE LAYOUTS WITH FLEXBOX 123Introducing Responsive Design 124The web is mobile 124Why are so many sites mobile-unfriendly? 124Introducing mobile-first design 124Making responsive web pages with the viewport meta tag 125Using Flexbox 128Creating boxes 129Thinking in one dimension 130Using multi-line containers 133Make no assumptions 134Aligning on the cross-axis 134Aligning on the main axis 136Modifying flexible boxes 137Changing the order of items 139Experimenting with Flexbox 140CHAPTER 6: STYLING WITH BOOTSTRAP 143Figuring Out What Bootstrap Does 144Installing Bootstrap 145Understanding the Layout Options 147Lining up on the grid system 147Dragging and dropping to a website 150Using predefined templates 151Adapting layout for mobile, tablet, and desktop 151Coding Basic Web Page Elements 153Designing buttons 153Navigating with toolbars 155Adding icons 157Practicing with Bootstrap 158BOOK 3: ADVANCED WEB CODING 159CHAPTER 1: WHAT IS JAVASCRIPT? 161What Is JavaScript? 161The Eich-man cometh 162Mocha-licious 163We need more effects! 163JavaScript Grows Up 164Dynamic scripting language 165What does JavaScript do? 166Why JavaScript? 167JavaScript is easy to learn! 168JavaScript is everywhere! 169JavaScript is powerful! 172JavaScript is in demand! 172CHAPTER 2: WRITING YOUR FIRST JAVASCRIPT PROGRAM 173Setting Up Your Development Environment 173Downloading and installing Chrome 174Downloading and installing a code editor 174Reading JavaScript Code 181Running JavaScript in the Browser Window 182Using JavaScript in an HTML event attribute 182Using JavaScript in a script element 183Including external JavaScript files 185Using the JavaScript Developer Console 188Commenting Your Code 189Single-line comments 190Multi-line comments 190Using comments to prevent code execution 191CHAPTER 3: WORKING WITH VARIABLES 193Understanding Variables 193Initializing Variables 195Understanding Global and Local Scope 197Naming Variables 199Creating Constants Using the const Keyword 201Working with Data Types 202Number data type 202bigInt data type 205String data type 205Boolean data type 208NaN data type 209Undefined data type 210Symbol data type 210CHAPTER 4: UNDERSTANDING ARRAYS 211Making a List 211Array Fundamentals 213Arrays are zero-indexed 213Arrays can store any type of data 214Creating Arrays 215Using the new keyword method 215Array literal 215Populating Arrays 215Understanding Multidimensional Arrays 216Accessing Array Elements 218Looping through arrays 219Array properties 220Array methods 220Using array methods 222CHAPTER 5: WORKING WITH OPERATORS, EXPRESSIONS, AND STATEMENTS 225Express Yourself 226Hello, Operator 226Operator precedence 226Using parentheses 227Types of Operators 230Assignment operators 230Comparison operators 231Arithmetic operators 231String operator 234Bitwise operators 234Logical operators 236Special operators 237Combining operators 239CHAPTER 6: GETTING INTO THE FLOW WITH LOOPS AND BRANCHES 241Branching Out 241if else statements 242Switch statements 243Here We Go: Loop De Loop 246for loops 246for in loops 248while loops 251do while loops 252break and continue statements 253CHAPTER 7: GETTING FUNCTIONAL 255Understanding the Function of Functions 255Using Function Terminology 257Defining a function 257Function head 257Function body 257Calling a function 258Defining parameters and passing arguments 258Returning a value 258The Benefits of Using Functions 258Writing Functions 262Returning Values 263Passing and Using Arguments 264Passing arguments by value 265Passing arguments by reference 267Calling a function without all the arguments 267Setting default parameter values 267Calling a function with more arguments than parameters 268Getting into arguments with the arguments object 268Understanding Function Scope 269Creating Anonymous Functions 270Knowing the differences between anonymous and named functions 270Arrow functions 270Doing it Again with Recursion 271Functions within Functions 273CHAPTER 8: MAKING AND USING OBJECTS 275Object of My Desire 275Creating Objects 277Defining objects with object literals 277Defining objects with a constructor function 278Making objects with class 279Using Object.create 280Retrieving and Setting Object Properties 280Using dot notation 281Using square bracket notation 281Deleting Properties 283Working with Methods 284Using this 286An Object-Oriented Way to Become Wealthy: Inheritance 287Creating an object using inheritance 288Modifying an object type 289CHAPTER 9: CONTROLLING THE BROWSER WITH THE WINDOW OBJECT 291Understanding the Browser Environment 291The user interface 292Loader 293HTML parsing 294CSS parsing 294JavaScript parsing 294Layout and rendering 295Investigating the BOM 295The Navigator object 295The Window object 298Using the Window object’s methods 304CHAPTER 10: MANIPULATING DOCUMENTS WITH THE DOM 307Understanding the DOM 307Understanding Node Relationships 309Using the Document Object’s Properties and Methods 314Using the Element Object’s Properties and Methods 316Working with the Contents of Elements 319innerHTML 319Setting attributes 320Getting Elements by ID, Tag Name, or Class 320getElementById 321getElementsByTagName 322getElementsByClassName 322Using the Attribute Object’s Properties 324Creating and Appending Elements 325Removing Elements 325CHAPTER 11: USING EVENTS IN JAVASCRIPT 327Knowing Your Events 327Handling Events 329Using inline event handlers 330Event handling using element properties 331Event handling using addEventListener 332Stopping propagation 336CHAPTER 12: INTEGRATING INPUT AND OUTPUT 339Understanding HTML Forms 339The form element 340The label element 341The input element 342The select element 344The textarea element 344The button element 344Working with the Form Object 345Using Form properties 345Using the Form object’s methods 347Accessing form elements 348Getting and setting form element values 349Validating user input 351CHAPTER 13: UNDERSTANDING CALLBACKS AND CLOSURES 355What Are Callbacks? 355Passing functions as arguments 356Writing functions with callbacks 356Using named callback functions 357Understanding Closures 360Using Closures 363CHAPTER 14: EMBRACING AJAX AND JSON 367Working behind the Scenes with AJAX 367AJAX examples 368Viewing AJAX in action 370Using the XMLHttpRequest object 373Working with the same-origin policy 375Using CORS, the silver bullet for AJAX requests 377Putting Objects in Motion with JSON 378BOOK 4: CREATING MOBILE APPS 383CHAPTER 1: WHAT IS FLUTTER? 385All About Hardware and Software 385Where Does Flutter Fit In? 389Cross-platform development 390A quick-and-easy development cycle 394A great way to think about app development 396Enough New Terminology! What’s Next? 400CHAPTER 2: SETTING UP YOUR COMPUTER FOR MOBILE APP DEVELOPMENT 401The Stuff You Need 401What to Do 403Getting and installing the stuff 403For Mac users only 406Configuring Android Studio 407Running your first app 408Dealing with the Devil’s Details 413On installing Android Studio 414On launching Android Studio for the first time 414On adding virtual devices 415On installing Flutter 416Divisiveness Among Devices 418Running apps on an Android device 418Testing apps on a physical device 419Using Android Studio 424Starting up 425The main window 425Running This Book’s Sample Programs 429Enjoying reruns 431If you’re finicky 432CHAPTER 3: “HELLO” FROM FLUTTER 433First Things First: Creating a Flutter Project 434What’s it all about? 436A constructor’s parameters 440A note about punctuation 442Don’t relent — simply indent 442Classes, Objects, and Widgets 444A brief treatise on “within-ness” 446The documentation is your friend 447Making Things Look Nicer 448Creating a scaffold 451Adding visual tweaks 453Dart’s enum feature 454Hello from sunny California! 454Adding another widget 456Centering the text (Part 1) 459Centering the text (Part 2) 461Displaying an image 464Hey, Wait a Minute 468CHAPTER 4: HELLO AGAIN 469Creating and Using a Function 470The function declaration 471A function call 472Parameters and the return value 472Programming in Dart: The Small Stuff 475Statements and declarations 475Dart’s typing feature 476Literals, variables, and expressions 477Two for the price of one 480Dart’s var keyword 483Built-in types 484Types that aren’t built-in 486Using import declarations 487Creating Function Declaration Variations 487Type names in function declarations 490Naming your parameters 491What about the build function? 492More Fun to Come! 493CHAPTER 5: MAKING THINGS HAPPEN 495Let’s All Press a Floating Action Button 495Stateless widgets and stateful widgets 498Widgets have methods 498Pay no attention to the framework behind the curtain 500Enhancing Your App 509More parameters, please 512The override annotation 514What does mean? 515Anonymous functions 516What belongs where 519Names that start with an underscore 524Whew! 525CHAPTER 6: LAYING THINGS OUT 527Understanding the Big Picture 528Creating bite-size pieces of code 531Creating a parameter list 533Living color 534Adding padding 535Your humble servant, the Column widget 537The SizedBox widget 539Your friend, the Container widget 539Nesting Rows and Columns 545Introducing More Levels of Nesting 546Using the Expanded Widget 549Expanded versus unexpanded 552Expanded widget saves the day 555Flexing some muscles 560How Big Is My Device? 562CHAPTER 7: INTERACTING WITH THE USER 567A Simple Switch 568Dart’s const keyword 571Compatible or NOT? 572Wait For It! 574How Much Do You Love Flutter? 576Dealing with Text Fields 581Callouts 1 and 2 582Callout 3 585Callout 4 586Callout 5 590Creating Radio Buttons 590Creating an enum 593Building the radio group 593Displaying the user’s choice 595Creating a Drop-Down Button 596Building the drop-down button 600The little Reset button 601Making a map 602Onward and Upward 603CHAPTER 8: NAVIGATION, LISTS, AND OTHER GOODIES 605Extending a Dart Class 605Navigating from One Page to Another 608An icon on a button 612Pushing and popping 612Passing Data from the Source to a Destination 613Passing Data Back to the Source 618Dart’s async and await keywords 621Taking control of the app bar’s Back button 623Passing Data in Both Directions 624Creating Named Routes 629Creating a List 633The ListView widget 634Creating list items one-by-one 639Making loops with Dart 643Fetching Data from the Internet 646Using a public API 647Sending an URL to a server 650Making sense of a JSON response 651What’s Next? 652CHAPTER 9: MOVING RIGHT ALONG 653Setting the Stage for Flutter Animation 653Moving Along a Straight Line 659Bouncing Around 664Animating Size and Color Changes 666Moving Along a Curve 668Dragging Things Around 670Tearing Things Up 673BOOK 5: GETTING STARTED WITH PYTHON 675CHAPTER 1: WRAPPING YOUR HEAD AROUND PYTHON 677What Does Python Do? 678Defining Python Structure 679Understanding the Zen of Python 679Styling and spacing 680Coding Common Python Tasks and Commands 681Defining data types and variables 681Computing simple and advanced math 682Using strings and special characters 684Deciding with conditionals: if, elif, else 685Input and output 686Shaping Your Strings 687Dot notation with upper(), lower(), capitalize(), and strip() 687String formatting with % 688CHAPTER 2: INSTALLING A PYTHON DISTRIBUTION 689Using Anaconda 690Getting Anaconda 690Defining why Anaconda is used in this book 691Installing Anaconda on Linux 692Installing Anaconda on macOS X 693Installing Anaconda on Windows 694Downloading the Data Sets and Example Code 696Starting Anaconda Navigator 697Using Jupyter Notebook 697Defining the code repository 699Understanding the data sets used in this book 704CHAPTER 3: WORKING WITH REAL DATA 707Uploading, Streaming, and Sampling Data 708Uploading small amounts of data into memory 709Streaming large amounts of data into memory 710Generating variations on image data 711Sampling data in different ways 712Accessing Data in Structured Flat-File Form 714Reading from a text file 714Reading CSV-delimited format 715Reading Excel and other Microsoft Office files 718Sending Data in Unstructured File Form 719Managing Data from Relational Databases 722Interacting with Data from NoSQL Databases 724Accessing Data from the Web 725Accessing XML data 725Using read_xml 727BOOK 6: DATA ANALYSIS WITH PYTHON 729CHAPTER 1: CONDITIONING YOUR DATA 731Juggling between NumPy and pandas 732Knowing when to use NumPy 732Knowing when to use pandas 732Validating Your Data 733Figuring out what’s in your data 734Removing duplicates 737Creating a data map and data plan 738Manipulating Categorical Variables 740Creating categorical variables 741Renaming levels 742Combining levels 743Dealing with Dates in Your Data 744Formatting date and time values 745Using the right time transformation 745Dealing with Missing Data 747Finding the missing data 747Encoding missingness 748Imputing missing data 749Slicing and Dicing: Filtering and Selecting Data 750Slicing rows 750Slicing columns 751Dicing 752Concatenating and Transforming 752Adding new cases and variables 753Removing data 754Sorting and shuffling 755Aggregating Data at Any Level 757CHAPTER 2: SHAPING DATA 759Working with HTML Pages 760Parsing XML and HTML 760Using XPath for data extraction 761Working with Raw Text 763Dealing with Unicode 763Stemming and removing stop words 764Introducing regular expressions 766Using the Bag of Words Model and Beyond 768Understanding the bag of words model 769Working with n-grams 771Implementing TF-IDF transformations 772Working with Graph Data 774Understanding the adjacency matrix 775Using NetworkX basics 775CHAPTER 3: GETTING A CRASH COURSE IN MATPLOTLIB 779Starting with a Graph 780Defining the plot 780Drawing multiple lines and plots 781Saving your work 782Setting the Axis, Ticks, Grids 783Getting the axes 783Formatting the axes 784Adding grids 785Defining the Line Appearance 786Working with line styles 786Using colors 787Adding markers 789Using Labels, Annotations, and Legends 790Adding labels 791Annotating the chart 792Creating a legend 793CHAPTER 4: VISUALIZING THE DATA 795Choosing the Right Graph 796Showing parts of a whole with pie charts 796Creating comparisons with bar charts 797Showing distributions using histograms 799Depicting groups using box plots 800Seeing data patterns using scatterplots 802Creating Advanced Scatterplots 803Depicting groups 803Showing correlations 804Plotting Time Series 806Representing time on axes 806Plotting trends over time 807Visualizing Graphs 809Developing undirected graphs 809Developing directed graphs 811BOOK 7: CAREER BUILDING WITH CODING 813CHAPTER 1: EXPLORING CODING CAREER PATHS 815Augmenting Your Existing Job 816Creative design 816Content and editorial 817Human resources 818Product management 819Sales and marketing 820Legal 821Finding a New Coding Job 822Frontend web development 823Backend web development 824Mobile application development 826Data analysis 827CHAPTER 2: EXPLORING UNDERGRADUATE AND GRADUATE DEGREES 829Getting a College Degree 830College computer science curriculum 831Doing extracurricular activities 833Two-year versus four-year school 834Enrolling in an Advanced Degree Program 836Graduate school computer science curriculum 837Performing research 838Interning to Build Credibility 839Types of internship programs 839Securing an internship 840CHAPTER 3: TRAINING ON THE JOB 843Taking a Work Project to the Next Level 844Learning on the Job and After Work 845Training on the job 846Learning after work 846Freelancing to Build Confidence and Skills 848Transitioning to a New Role 849Assessing your current role 850Networking with developers 850Identifying roles that match your interest and skills 851CHAPTER 4: CODING CAREER MYTHS 853You Must Be Good at Math 853You Must Have Studied Engineering 854You Can Learn Coding in a Few Weeks 855You Need a Great Idea to Start Coding 855Ruby Is Better than Python 856Only College Graduates Receive Coding Offers 856You Must Have Experience 857Tech Companies Don’t Hire Women or Minorities 858The Highest Paying Coding Jobs Are in San Francisco 859Your Previous Experience Isn’t Relevant 860Index 861
Network Programming with Go Language
Dive into key topics in network architecture implemented with the Google-backed open source Go programming language. Networking topics such as data serialization, application level protocols, character sets and encodings are discussed and demonstrated in Go. This book has been updated to the Go version 1.18 which includes modules, generics, and fuzzing along with updated and additional examples.Beyond the fundamentals, Network Programming with Go, Second Edition covers key networking and security issues such as HTTP protocol changes, validation and templates, remote procedure call (RPC) and REST comparison, and more. Additionally, authors Ronald Petty and Jan Newmarch guide you in building and connecting to a complete web server based on Go. Along the way, use of a Go web toolkit (Gorilla) will be employed.This book can serve as both an essential learning guide and reference on networking concepts and implementation in Go. Free source code is available on Github for this book under Creative Commons open source license.WHAT YOU WILL LEARN* Perform network programming with Go (including JSON and RPC)* Understand Gorilla, the Golang web toolkit, and how to use it* Implement a microservice architecture with Go* Leverage Go features such as generics, fuzzing* Master syscalls and how to employ them with GoWHO THIS BOOK IS FORAnyone interested in learning networking concepts implemented in modern Go. Basic knowledge in Go is assumed, however, the content and examples in this book are approachable with modest development experience in other languages.JAN NEWMARCH, Ph.d., is Head of Higher Education (ICT), Box Hill Institute, Adjunct Senior Research Fellow, Faculty of IT, Monash University, and Adjunct Lecturer, School of Computing and Mathematics Charles Sturt University.RONALD PETTY is a Principal Consultant at RX-M LLC. His programming expertise is in open source languages like Go, Ruby and more. He currently is working on a number of Go code projects on Github.1: Architectural Layers2: Overview of the Go Language3: Socket-Level Programming4: Data Serialization5: Application-Level Protocols6: Managing Character Sets and Encodings7: Security8: HTTP9: Templates10: A Complete Web Server11: HTML12: XML13: Remote Procedure Call14: REST15: WebSockets16: Gorilla17: TestingAppendix A: FuzzingAppendix B: Generics
Beginning Data Science in R 4
Discover best practices for data analysis and software development in R and start on the path to becoming a fully-fledged data scientist. Updated for the R 4.0 release, this book teaches you techniques for both data manipulation and visualization and shows you the best way for developing new software packages for R.Beginning Data Science in R 4, Second Edition details how data science is a combination of statistics, computational science, and machine learning. You’ll see how to efficiently structure and mine data to extract useful patterns and build mathematical models. This requires computational methods and programming, and R is an ideal programming language for this.Modern data analysis requires computational skills and usually a minimum of programming. After reading and using this book, you'll have what you need to get started with R programming with data science applications. Source code will be available to support your next projects as well.Source code is available at github.com/Apress/beg-data-science-r4.WHAT YOU WILL LEARN* Perform data science and analytics using statistics and the R programming language* Visualize and explore data, including working with large data sets found in big data* Build an R package* Test and check your code* Practice version control* Profile and optimize your codeWHO THIS BOOK IS FORThose with some data science or analytics background, but not necessarily experience with the R programming language.Thomas Mailund is an associate professor in bioinformatics at Aarhus University, Denmark. His background is in math and computer science but for the last decade his main focus has been on genetics and evolutionary studies, particularly comparative genomics, speciation, and gene flow between emerging species.1. Introduction to R programming.2. Reproducible analysis.3. Data manipulation.4. Visualizing and exploring data.5. Working with large data sets.6. Supervised learning.7. Unsupervised learning.8. More R programming.9. Advanced R programming.10. Object oriented programming.11. Building an R package.12. Testing and checking.13. Version control.14. Profiling and optimizing.
Java Schnelleinstieg
* JAVA PROGRAMMIEREN LERNEN OHNE VORKENNTNISSE* ALLE GRUNDLAGEN FÜR DEN PROFESSIONELLEN EINSATZ* EINFACHE PRAXISBEISPIELE UND ÜBUNGSAUFGABENMit diesem Buch gelingt Ihnen der einfache Einstieg in die Java-Programmierung.Alle Grundlagen werden in 14 Kapiteln anschaulich und leicht nachvollziehbar anhand von Codebeispielen erläutert. Übungsaufgaben am Ende der Kapitel helfen Ihnen, das neu gewonnene Wissen schnell praktisch anzuwenden und zu vertiefen.Der Autor führt Sie Schritt für Schritt in die Welt der Programmierung ein: von den Grundlagen über Objektorientierung und die Entwicklung von Anwendungen mit grafischer Benutzungsoberfläche bis zum Programmieren von REST-Schnittstellen. Dabei lernen Sie ebenfalls, was guten Programmierstil ausmacht und wie man Fehler in Programmtexten finden und von vornherein vermeiden kann.So sind Sie perfekt auf den Einsatz von Java im professionellen Umfeld vorbereitet.AUS DEM INHALT:* Alle Grundlagen einfach erläutert* Objektorientierte Programmierung* Einsatz von Open-Source-Bibliotheken* Grafische Benutzungsoberflächen (GUI)* Einsatz von Datenbanken* Entwicklung von REST-Schnittstellen* Fehlerbehandlung und Debugging* Professioneller Programmierstil* Programmcode, Lösungen und Glossar zum DownloadDaniel Braun ist promovierter Informatiker und forscht und lehrt im Bereich betrieblicher Informationssysteme. Er ist Maintainer einer Open-Source-Java-Bibliothek und Autor verschiedener Programmierbücher.
Java für Kids
* EINFACHER EINSTIEG IN DIE JAVA-PROGRAMMIERUNG MIT VIELEN PROFI-TIPPS* ZAHLREICHE KLEINE SPIELE PROGRAMMIEREN LERNEN MIT SCHRITT-FÜR-SCHRITT-ANLEITUNGEN* MIT FRAGEN UND AUFGABEN AM ENDE JEDES KAPITELS SOWIE HILFREICHEN SPICKZETTELN ZUM DOWNLOADJava - wer denkt da nicht an eine Insel, auf der es heiß und feucht ist, mit Vulkanen, viel Wald und seltenen Tieren? Du nicht? Du denkst an eine Programmiersprache? Dann bist du hier richtig! In diesem Buch erfährst du, wie du deinem Computer Befehle gibst und unter anderem kleine Spiele programmierst - und er dann tut, was du möchtest.Hans-Georg Schumann zeigt dir, wie du mit Java erste Programme schreibst und welche Zutaten du dazu benötigst: Variablen, Kontrollstrukturen, Klassen und mehr. Schritt für Schritt werden die Quelltexte umfangreicher bis hin zur objektorientierten Programmierung. So schaffst du den Einstieg in Java zusammen mit der Entwicklungsumgebung Eclipse spielend leicht!Schnell hast du ein erstes Lotto-Spiel programmiert, dein Programm mit Buttons und Häkchen professionell ausgestattet und den Rechner dazu gebracht, Quizfragen zu stellen. Du erfährst aber auch, wie du mit Java bunte Grafiken erstellst oder Figuren animierst, also zum Laufen bringst. Zudem macht das Programmieren von Spielen wie Hangman oder Stein-Schere-Papier nicht nur dir als Programmierer oder Programmiererin großen Spaß, sondern auch allen Spielern und Spielerinnen.Programmieren mit Java ist nicht so kompliziert, wie es sich anhört! Denn alles wird genau erklärt und am Ende der Kapitel noch einmal zusammengefasst.AUS DEM INHALT:* Was eine Entwicklungsumgebung ist und wie du z.B. mit Eclipse programmierst* Objekte, Klassen und Pakete kennenlernen* Lleine Spiele entwickeln: Zufallszahlen und Zahlenraten* Grundlagen objektorientierter Programmierung* Optische Gestaltung mit Swing* Ein Quiz-Spiel und Hangman programmieren* Buttons und andere Komponenten als Diagnosehilfe einsetzen* Eine Figur zum Laufen bringen* Zahlreiche Ideen für die Spieleprogrammierung: Von Stein-Schere-Papier bis zur spannenden Käferjagd* Ausführlicher Anhang zur Installation und FehlersucheZUM DOWNLOAD UNTER WWW.MITP.DE/0520:* alle Projekte aus dem Buch* Lösungen zu den Fragen und Aufgaben im Buch* Hilfreiche Spickzettel zum AusdruckenHans-Georg Schumann war Informatik- und Mathematiklehrer an einer Gesamtschule. Er hat bereits viele erfolgreiche Bücher in der mitp-Buchreihe »... für Kids« geschrieben.
PostgreSQL
Praxisbuch für Administratoren und EntwicklerWenn Sie als Administrator, Entwickler oder IT-/System-Architekt PostgreSQL professionell und erfolgreich in der Praxis einsetzen wollen, finden Sie in diesem Arbeitsbuch die richtige Unterstützung. Administratoren bietet es Anleitung beim täglichen Datenbankbetrieb sowie detaillierte Informationen und Praxistipps zu Themen wie Backup and Recovery, Sicherheit und Überwachung, Performance Tuning oder Hochverfügbarkeit. Einen weiteren Schwerpunkt bildet die Replikation von und nach anderen Datenbanksystemen. IT-Architekten, System-Designer und IT-Manager erfahren, wie PostgreSQL kostengünstig in eine bestehende IT-Infrastruktur platziert werden kann und effektiv mit anderen Datenbanksystemen, wie z. B. Oracle, zusammenarbeitet. Entwickler lernen, wie robuste und performante Datenbankapplikationen erstellt werden und erhalten außerdem einen praktischen Leitfaden für den Umstieg von Oracle auf PostgreSQL. Eigene Kapitel widmen sich den Themen PostgreSQL für Data Science und maschinelles Lernen.Aus dem Inhalt: Konfiguration von Cluster und DatenbankDie Architektur von PostgreSQLHot Standby, Streaming Replication und Logical ReplicationTuning von Datenbanken und SQL-AnweisungenParallelisierung und PartitionierungEntwicklung von Applikationen für PostgreSQLIndexe einsetzenTextverarbeitungReplikation zwischen PostgreSQL und OracleData Science und MLPostgreSQL in der CloudLeseprobe (PDF-Link)Autor: Lutz Fröhlich ist Diplom-Mathematiker und freiberuflicher IT-Berater. Er beschäftigt sich seit 30 Jahren mit Datenbanken und schöpft seine praktischen Erfahrungen aus langjährigen Consulting-Tätigkeiten in den USA und in Europa. Seine Spezialgebiete sind Performance, Hochverfügbarkeit, Exadata sowie Daten-Replikation und Streaming. Er arbeitet seit mehreren Jahren in den Bereichen Data Science und maschinelles Lernen und hält regelmäßig Seminare und Vorträge zu diesen und anderen Themen.
Einstieg in die Regelungstechnik mit Python (4. Auflage)
Die 4., überarbeitete und erweiterte Auflage dieses Lehrbuchs bietet eine systemorientierte Einführung in das Fachgebiet der Regelungstechnik. Die wesentlichen Grundlagen werden anhand vielfältiger praktischer Beispiele behandelt, die in der Programmiersprache Python umgesetzt sind. Nach einer kurzen Einführung in Python und in die Software-Pakete NumPy, SciPy und Control, werden die theoretischen Grundlagen der Regelungstechnik behandelt. Im Vordergrund steht die praxisnahe Vermittlung des Stoffes und nicht eine möglichst umfangreiche Aneinanderreihung von Analyse- und Syntheseverfahren. Ziel ist die schnelle Befähigung zur Berechnung und erfolgreichen praktischen Realisierung eines Reglers. Es werden nur die dafür notwendigen mathematischen Grundlagen vermittelt. Übungsaufgaben runden die Inhalte ab. Die vierte Auflage wurde um Entwurfsverfahren für integralwirkende Strecken, Strecken mit Totzeit sowie um die numerische Optimierung von Regelkreisen erweitert. Hinzugefügt wurde das Thema Modellreduktion und um ein Beispiel ergänzt wurde der Zustandsreglerentwurf.Leseprobe (PDF-Link)Autor: Prof. Dr.-Ing. Hans-Werner Philippsen unterrichtet Regelungstechnik an der Hochschule Bremen. Seine Arbeitsgebiete umfassen die Regelung von mechatronischen Systemen, Fahrzeugregelungen sowie Vorgehensmodelle für die Regelungstechnik.
Spektrum Kompakt - Mensch und Maschine
Der Film Ex Machina war 2014 Sciencefction und ist es noch. Aber würden Sie es merken, ob dieses Editorial von mir stammt – oder von einer künstlichen Intelligenz, die es zusammenfügt aus Wörtern, Satzbausteinen, vielleicht ganzen Absätzen, die sie während des Lernprozesses durchforstet hat? Und was lernen wiederum wir Menschen aus den Ergebnissen und Erfahrungen der KI-Forschung über die Funktionsweise unseres Gehirns? Wo sich Neurowissenschaften, Informatik und auch Philosophie treffen, entstehen spannende Fragen – und Antworten.