dart

Topics related to dart:

Getting started with dart

Dart is an open-source, class-based, optionally-typed programming language for building web applications--on both the client and server--created by Google. Dart’s design goals are:

Create a structured yet flexible language for web programming.
Make Dart feel familiar and natural to programmers and thus easy to learn.
Ensure that Dart delivers high performance on all modern web browsers and environments ranging from small handheld devices to server-side execution.

Dart targets a wide range of development scenarios, from a one-person project without much structure to a large-scale project needing formal types in the code to state programmer intent.

To support this wide range of projects, Dart provides the following features and tools:

Optional types: this means you can start coding without types and add them later as needed.
Isolates: concurrent programming on server and client
Easy DOM access: using CSS selectors (the same way that jQuery does it)
Dart IDE Tools: Dart plugins exist for many commonly used IDEs, Ex: WebStorm.
Dartium: a build of the Chromium Web Browser with a built-in Dart Virtual Machine

Documentation

FAQ

Frequently Asked Questions

Collections

Control Flow

Classes

Comments

It is good practice to add comments to your code to explain why something is done or to explain what something does. This helps any future readers of your code to more easily understand your code.

Asynchronous Programming

Converting Data

Functions

Dart is a true object-oriented language, so even functions are objects and have a type, Function. This means that functions can be assigned to variables or passed as arguments to other functions. You can also call an instance of a Dart class as if it were a function.

Date and time

Libraries

The import and library directives can help you create a modular and shareable code base. Every Dart app is a library, even if it doesn’t use a library directive. Libraries can be distributed using packages. See Pub Package and Asset Manager for information about pub, a package manager included in the SDK.

Exceptions

Dart code can throw and catch exceptions. Exceptions are errors indicating that something unexpected happened. If the exception isn’t caught, the isolate that raised the exception is suspended, and typically the isolate and its program are terminated.

In contrast to Java, all of Dart’s exceptions are unchecked exceptions. Methods do not declare which exceptions they might throw, and you are not required to catch any exceptions.

Dart provides Exception and Error types, as well as numerous predefined subtypes. You can, of course, define your own exceptions. However, Dart programs can throw any non-null object—not just Exception and Error objects—as an exception.