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:html: DOM manipulation for web apps (available only to web apps).
- dart:io: I/O for non-web apps.
Except for dart:core, you must import a library before you can use it. Here's
an example of importing dart:async and dart:math:
import 'dart:async';
import 'dart:math';
You can find more libraries using the pub.dev site.
The main site for learning and using Dart is dart.dev. Check out these pages:
This API reference is automatically generated from source code in the Dart SDK project. If you'd like to give feedback or edit this documentation, see Contributing.
Libraries
- 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:math
- Mathematical constants and functions, plus a random number generator. [...]
- dart:typed_data
- Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]
- dart:cli
- Utilities for building CLI apps. [...]
- dart:ffi
- Foreign Function Interface for interoperability with the C programming language. [...]
- 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:mirrors
- Basic reflection in Dart, with support for introspection and dynamic invocation. [...]
- 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:js
- Low-level support for interoperating with JavaScript. [...]
- dart:js_util
- Utility methods to manipulate
package:jsannotated JavaScript interop objects in cases where the name to call is not known at runtime. [...] - dart:svg
- Scalable Vector Graphics: Two-dimensional vector graphics with support for events and animation. [...]
- dart:web_audio
- High-fidelity audio programming in the browser.
- dart:web_gl
- 3D programming in the browser.