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DART Cookbook

DART Cookbook

By : Ivo Balbaert
4 (2)
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DART Cookbook

DART Cookbook

4 (2)
By: Ivo Balbaert

Overview of this book

If you are a Dart developer looking to sharpen your skills, and get insight and tips on how to put that knowledge into practice, then this book is for you. You should also have a basic knowledge of HTML, and how web applications with browser clients and servers work, in order to build dynamic Dart applications.
Table of Contents (13 chapters)
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12
Index

Introduction

Working with files is the bread and butter of every programming language when reaching out for data in the environment. The classes and methods dealing with this functionality can be found in the dart:io package, together with support for networking (sockets and HTTP). This package can only be used in Dart command-line applications, not in browser apps, so our code runs in a Dart VM.

When working with files, and I/O in general, there are two modes of operation:

  • Synchronous operations, where code execution waits for the I/O result
  • Asynchronous operations, where the code execution is not blocked and continues while I/O is taking place

Because the Dart VM is single threaded, a synchronous call blocks the application. So, for scalability reasons, the asynchronous way is the best practice using the Future and Stream classes from the dart:async package. Most methods on files come in pairs, the asynchronous and the synchronous versions, such as copy and copySync. Unless you really have...

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