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  • Book Overview & Buying DART Cookbook
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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

Scheduling tasks using Futures


The Dart VM is single-threaded, so all of an app's code runs in one thread, also called the main isolate. This is because main() is the function where Dart code starts executing an isolate, because Dart's concurrency model is based on isolates as separate processes that exchange messages. We will talk about isolates in depth in the coming recipes, but if your code doesn't start a new isolate, all of it runs in one isolate. But, in this one isolate, you can have lots of asynchronous pieces of code (let's call them tasks) running at the same time; in what order do they execute, and can we influence that order? It turns out that a better understanding of Dart's event loop and task queuing mechanism enables us to do that. This recipe will clarify Dart's scheduling mechanism and give you hints and tips for an ordered execution of tasks.

How to do it...

Have a look at the program tasks_scheduling.dart (the tasks are numbered consecutively and according to the way they...

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Tech Concepts
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Programming languages
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DART Cookbook
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