book

Dart: Up and Running

by Kathy Walrath, Seth Ladd

October 2012

Intermediate to advanced

158 pages

2h 52m

English

O'Reilly Media, Inc.

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Conventions Used in This BookUsing Code ExamplesSafari® Books OnlineHow to Contact UsContent UpdatesChanges in the Third Printing: February 19, 2014Changes in the Second Printing: March 29, 2013Acknowledgments
Why Google Created DartA Quick Look at the Dart LanguageWhat’s Cool About DartUp and RunningStep 1: Download and Install the SoftwareStep 2: Launch the EditorStep 3: Open and Run a DemoStep 4: Create and Run an AppWhat Next?Follow a code labRead tutorialsBecome a power userSend feedback
A Basic Dart ProgramImportant ConceptsKeywordsRuntime ModesVariablesDefault ValueOptional TypesFinal and ConstBuilt-in TypesNumbersStringsBooleansListsMapsSymbolsFunctionsOptional ParametersOptional named parametersOptional positional parametersThe main() FunctionFunctions as First-Class ObjectsLexical ScopeLexical ClosuresTesting Functions for EqualityReturn ValuesOperatorsArithmetic OperatorsEquality and Relational OperatorsType Test OperatorsAssignment OperatorsLogical OperatorsBitwise and Shift OperatorsOther OperatorsControl Flow StatementsIf and ElseFor LoopsWhile and Do-WhileBreak and ContinueSwitch and CaseAssertExceptionsThrowCatchFinallyClassesInstance VariablesConstructorsDefault constructorsConstructors aren’t inheritedNamed constructorsInvoking a non-default superclass constructorInitializer listRedirecting constructorsConstant constructorsFactory constructorsMethodsInstance methodsGetters and settersAbstract methodsOverridable operatorsAbstract ClassesImplicit InterfacesExtending a ClassAdding Features to a Class: MixinsClass Variables and MethodsStatic variablesStatic methodsGenericsWhy Use Generics?Using Collection LiteralsUsing Parameterized Types with ConstructorsGeneric Collections and the Types They ContainLibraries and VisibilityUsing LibrariesSpecifying a library prefixImporting only part of a libraryImplementing LibrariesDeclaring a libraryAssociating a file with a libraryRe-exporting librariesIsolatesTypedefsMetadataCommentsSingle-Line CommentsMulti-Line CommentsDocumentation CommentsSummary
dart:core—Numbers, Collections, Strings, and MoreNumbersStrings and Regular ExpressionsSearching inside a stringExtracting data from a stringConverting to uppercase or lowercaseTrimming and empty stringsReplacing part of a stringBuilding a stringRegular expressionsMore informationCollectionsListsSetsMapsCommon collection methodsURIsEncoding and decoding fully qualified URIsEncoding and decoding URI componentsParsing URIsBuilding URIsDates and TimesUtility ClassesComparing objectsImplementing map keysIterationExceptionsdart:async—Asynchronous ProgrammingFutureBasic usageChaining multiple asynchronous methodsWaiting for multiple FuturesStreamListening for stream dataTransforming stream dataMore Informationdart:math—Math and RandomTrigonometryMaximum and MinimumMath ConstantsRandom NumbersMore Informationdart:html—Browser-Based AppsManipulating the DOMFinding elementsManipulating elementsCreating elementsAdding, replacing, and removing nodesManipulating CSS stylesHandling eventsUsing HTTP Resources with HttpRequestGetting data from the serverSending data to the serverSending and Receiving Real-Time Data with WebSocketsSending dataReceiving dataHandling WebSocket eventsMore Informationdart:io—I/O for Command-Line AppsFiles and DirectoriesReading a file as textReading a file as binaryHandling errorsStreaming file contentsWriting file contentsListing files in a directoryOther common functionalityHTTP Clients and ServersHTTP serverHTTP clientMore Informationdart:convert—Decoding and Encoding JSON, UTF-8, and MoreDecoding and Encoding JSONDecoding and Encoding UTF-8 CharactersOther Functionalitydart:mirrors—ReflectionSymbolsIntrospectionClass MirrorsInstanceMirrorsInvocationInvoke methodsInvoke getters and settersMore InformationSummary
pub: The Dart Package ManagerCreating a PubspecInstalling PackagesImporting Libraries from PackagesMore InformationDart EditorViewing SamplesManaging the Files ViewAdding appsRemoving appsCreating AppsEditing AppsUsing autocompleteBrowsing APIsFinding out more about an APIOutlining a file’s contentsRefactoringSearchingRunning AppsSpecifying launch configurationsRunning in production modeSpecifying a browser for JavaScript launchesDebugging AppsCompiling to JavaScriptOther FeaturesCustomizing Dart EditorKeyboard alternativesDartium: Chromium with the Dart VMDownloading and Installing the BrowserLaunching the BrowserFiling BugsLinking to Dart SourceDetecting Dart SupportLaunching from the Command Linedart2js: The Dart-to-JavaScript CompilerBasic UsageOptionsHelping dart2js Generate Better CodeDebuggingChromeFirefoxSafaridart: The Standalone VMBasic UsageOptionsEnabling Checked Modedartanalyzer: The Static AnalyzerBasic UsageOptionsSummary
How to Run Dartiverse SearchHow Dartiverse Search WorksThe Client’s HTML CodeThe Client’s Dart CodeFinding DOM ElementsHandling EventsGetting and Setting PropertiesAdding DOM ElementsEncoding and Decoding MessagesCommunicating with WebSocketsThe Server’s CodeServing Static FilesManaging WebSocket ConnectionsUsing Web APIsImplementing a LibraryLogging MessagesWhat Next?

Overview

Get moving with Dart, the development platform that helps you build high-performance HTML5 apps for the modern Web. With this guide, you’ll take a hands-on tour of the Dart language, libraries, and tools—including its editor and virtual machine—for developing structured, fast, and maintainable web apps that run on both the client and the server.

Written by developer advocates at Google, this updated edition covers Dart 1.0. Google designed Dart to boost performance and help developers work more efficiently. This book shows you how to build everything from simple scripts to complex apps that work well in today’s browsers.

Build web apps with the object-oriented Dart language, and compile your code to JavaScript
Delve into language features, from optional types and method cascades to named constructors
Create, launch, and debug web and command-line apps with Dart Editor
Explore Dart APIs, including dart:core, dart:html, dart:io, dart:convert, and dart:mirrors
Use tools such as Dartium, the Chromium-based browser that can run Dart apps natively
Walk through Dartiverse Search, a client-server app that combines useful and fun language and API features