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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

Using reflection


The Dart mirror-based reflection API (contained in the dart:mirrors library) provides a powerful set of tools to reflect on code. This means that it is possible to introspect the complete structure of a program and discover all the properties of all the objects. In this way, methods can be invoked reflectively. It will even become possible to dynamically evaluate code that was not yet specified literally in the source code. An example of this would be calling a method whose name was provided as an argument because it is looked up in the database table.

Getting ready

The part of your code that uses reflection should have the following import code:

import 'dart:mirrors';

How to do it...

To perform reflection we perform the following actions:

  • In the reflection project, we use a class Embrace to reflect upon:

    void main() {
        var embr = new Embrace(5);
        print(embr);  // Embraceometer reads 5
        embr.strength += 5;
        print(embr.toJson()); // {strength: 10}
        var embr2 = new...

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