| Welcome to the Dart API reference documentation, covering the official Dart API |
| libraries. Some of the most fundamental Dart libraries include: |
| |
| * [dart:core](dart-core/dart-core-library.html): Core functionality such as strings, numbers, collections, errors, dates, and URIs. |
| * [dart:html](dart-html/dart-html-library.html): DOM manipulation for web apps. |
| * [dart:io](dart-io/dart-io-library.html): I/O for command-line apps. |
| |
| Except for `dart:core`, you must import a library before you can use it. Here's |
| an example of importing `dart:html` and `dart:math`: |
| |
| ```dart |
| import 'dart:html'; |
| import 'dart:math'; |
| ``` |
| |
| You can install more libraries using the pub package manager. For information |
| on finding, using, and publishing libraries with pub, see |
| [pub.dartlang.org](https://pub.dartlang.org). |
| |
| The main site for learning and using Dart is |
| [www.dartlang.org](https://www.dartlang.org). Check out these additional pages: |
| |
| * [Tutorials](https://www.dartlang.org/docs/tutorials/) |
| * [Programmer's Guide](https://www.dartlang.org/docs/) |
| * [Samples](https://www.dartlang.org/samples/) |
| * [A Tour of the Dart Libraries](https://www.dartlang.org/docs/dart-up-and-running/contents/ch03.html) |
| |
| This API reference is automatically generated from the source code in the |
| [Dart project](https://github.com/dart-lang/sdk). If you'd like to contribute to |
| this documentation, see |
| [Contributing](https://github.com/dart-lang/sdk/wiki/Contributing). |
