Dart: Libraries Cheat Sheet

# Importing a library in Dart

import 'URI'

import 'dart:io' 
import 'package:lib1/libfile.dart' 

import 'package: lib1/lib1.dart' show foo, bar;  
// Import only foo and bar. 
import 'package: mylib/mylib.dart' hide foo;  
// Import all names except foo

# Commonly used libraries

dart:io	File, socket, HTTP, and other I/O support for server applications. This library does not work in browser-based applications. This library is imported by default.
dart:core	Built-in types, collections, and other core functionality for every Dart program. This library is automatically imported.
dart: math	Mathematical constants and functions, plus a random number generator.
dart: convert	Encoders and decoders for converting between different data representations, including JSON and UTF-8.
dart: typed_data	Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers).