Other noteworthy APIs and libraries

The goal of this book is not to go through all the APIs that come with HTML5, but there are some that are worth taking a look at, including some interesting Dart libraries. You probably won't use them on a daily basis, but it's good to know that there's such things available to you.

Typed lists for fast numeric computing

Even though everything in Dart is an object and the VM is very well optimized, there's a built-in dart:typed_data library, which we already mentioned in the audio visualizer app. This library contains data structures (mostly lists) with fixed size n-bit signed / unsigned integers / floats. In other words, lists that can contain only n-bit numbers and no objects.

In practice, if we knew we wanted to store only 8-bit values (that's 0-255) in an array, we could use the Uint8List class instead of List<int>. This could represent, for example, image colors:

import 'dart:io';
import 'dart:typed_data...