Welcome to the Dart API reference documentation, covering the core Dart API libraries. Some of the most fundamental Dart libraries 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 install more libraries using the pub package manager.
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
- 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 efficiently manipulate typed JSInterop objects in cases where the name to call is not known at runtime. You should only use these methods when the same effect cannot be achieved with @JS annotations. These methods would be extension methods on JSObject if Dart supported extension methods.
- 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.
- dart:web_sql
- An API for storing data in the browser that can be queried with SQL. [...]