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  • Book Overview & Buying Mastering DART
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Mastering DART

Mastering DART

By : Akopkokhyants
4.6 (5)
Buy this Book
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Mastering DART

Mastering DART

4.6 (5)
By: Akopkokhyants
Buy this Book

Overview of this book

If you are an application developer who has experience with Dart and want to develop reusable and robust code in Dart, then this book is for you. You are expected to have a basic knowledge of core elements and applications.
Table of Contents (14 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Beyond Dart's Basics
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1. Beyond Dart's Basics
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Modularity and a namespace
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Functions and closures in different scopes
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Classes and mixins
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Methods and operators
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Summary
2
2. Advanced Techniques and Reflection
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2. Advanced Techniques and Reflection
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Generics
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Errors versus exceptions
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Annotations
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Reflection
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Summary
3
3. Object Creation
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3. Object Creation
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Creating an object
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Summary
4
4. Asynchronous Programming
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4. Asynchronous Programming
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Call-stack architectures versus event-driven architectures
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Future
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Zones
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Isolates
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Summary
5
5. The Stream Framework
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5. The Stream Framework
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Why you should use streams
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Single-subscription streams versus broadcast streams
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An overview of the stream framework API
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Summary
6
6. The Collection Framework
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6. The Collection Framework
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A Dart collection framework
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Ordering of elements
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Collections and generics
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The collection class hierarchy
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The Iterable interface
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The Iterable interface
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BidirectionalIterator
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The collection classes
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Unmodifiable collections
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Choosing the right collection
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Summary
7
7. Dart and JavaScript Interoperation
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7. Dart and JavaScript Interoperation
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Interoperation at a glance
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The dart:js library
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Type conversion
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JsObject and instantiation
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JsFunction and the this keyword
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Dart with jQuery
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Summary
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8. Internalization and Localization
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8. Internalization and Localization
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The key principles
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The Intl library
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Internationalizing your web application
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Extracting messages
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Using Google Translator Toolkit
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Using translated messages
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Summary
9
9. Client-to-server Communication
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9. Client-to-server Communication
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Communication at a glance
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Hypertext Transfer Protocol
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AJAX polling request
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AJAX long polling request
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WebSocket
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Summary
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10. Advanced Storage
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10. Advanced Storage
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Cookies
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Web Storage
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Web SQL
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IndexedDB
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Summary
11
11. Supporting Other HTML5 Features
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11. Supporting Other HTML5 Features
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The notification APIs
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The native drag-and-drop APIs
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The geolocation APIs
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Canvas
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Summary
12
12. Security Aspects
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12. Security Aspects
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Web security
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Securing a server
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Securing a client
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Security best practices
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Summary
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Index
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Index

AJAX long polling request

From a client perspective, the AJAX long polling request looks similar to normal one. An important difference between them on the server side is that if the server doesn't have any information available or the client, it holds the request and waits for information to become available or for a suitable timeout, after which a completed response is sent to the client. The long polling requests reduces the amount of data that needs to be sent because the server only sends data when it is really available.

The long pooling request is useful in the following cases:

  • When your solution must work in old web browsers

  • When the data traffic between the client and server is low

  • When the implementation is very simple

The advantages of using the long pooling request are as follows:

  • It works across all browsers

  • It is easy to develop and perfectly fits in the legacy code without significant changes and effort

  • It can detect a connection failure quickly and resume a session to avoid data...

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Mastering DART
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