Dart#
Welcome!#
Welcome to the Dart API reference documentation, covering the Dart core libraries. These include:
- dart:core: Core functionality such as strings, numbers, collections, errors, dates, and URIs.
- dart:io: I/O for non-web apps.
- dart:async: Functionality for asynchronous programming with futures, streams, and zones.
You'll also find reference documentation covering Dart's various platform interoperability options, such as:
- dart:js_interop: Library including a sound type hierarchy and helper functions for interoperability with JavaScript.
- package:web: DOM manipulation for web apps.
- dart:ffi: Foreign function interfaces for interoperability with the C language.
The core libraries - except for dart:core - must be imported before they're
available for use:
import 'dart:math';
Additionally, you can find Dart packages at pub.dev.
Language docs#
The main site for learning and using Dart is dart.dev. Check out these pages:
This API reference is generated from the SDK source at dart-lang/sdk. If you'd like to give feedback on or edit this documentation, see Contributing.
Libraries#
| Library | Description |
|---|---|
| dart:async | Support for asynchronous programming, with classes such as Future and Stream. |
| dart:collection | Classes and utilities that supplement the collection support in dart:core. |
| dart:convert | Encoders and decoders for converting between different data representations, including JSON and UTF-8. |
| dart:core | Built-in types, collections, and other core functionality for every Dart program. |
| dart:developer | Interact with developer tools such as the debugger and inspector. |
| dart:ffi | Foreign Function Interface for interoperability with the C programming language. |
| dart:html | HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). |
| dart:indexed_db | A client-side key-value store with support for indexes. |
| dart:io | File, socket, HTTP, and other I/O support for non-web applications. |
| dart:isolate | Concurrent programming using isolates : independent workers that are similar to threads but don't share memory, communicating only via messages. |
| dart:js | Low-level support for interoperating with JavaScript. |
| dart:js_interop | Interoperability, "interop" for short, with JavaScript and browser APIs. |
| dart:js_interop_unsafe | Utility methods to manipulate JavaScript objects dynamically. |
| dart:js_util |
Utility methods to manipulate
package:js
annotated JavaScript interop objects in cases where the name to call is not known at runtime.
|
| dart:math | Mathematical constants and functions, plus a random number generator. |
| dart:mirrors | Basic reflection in Dart, with support for introspection and dynamic invocation. |
| dart:svg | Scalable Vector Graphics: Two-dimensional vector graphics with support for events and animation. |
| dart:typed_data | Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. |
| dart:web_audio | High-fidelity audio programming in the browser. |
| dart:web_gl | 3D programming in the browser. |