Dart - Programming language

Dart is an open source programming language created in 2011 by Lars Bak.

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Dart is a general-purpose programming language originally developed by Google and later approved as a standard by Ecma (ECMA-408). It is used to build web, server and mobile applications, and for Internet of Things (IoT) devices. It is open-source software under a permissive free software license (modified BSD license). Read more on Wikipedia...

Tags: programming language
There are at least 737,948 Dart repos on GitHub
Early development of Dart happened in Google
The Google BigQuery Public Dataset GitHub snapshot shows 3k users using Dart in 6k repos on GitHub
There are 35,109 members in the Dart subreddit
There are 54 Project Euler users using Dart
In the 2021 StackOverflow developer survey Dart programmers reported a median salary of $32,986. 6% of respondents reported using Dart. 4,965 programmers reported using Dart, and 7,018 said they wanted to use it
Explore Dart snippets on Rosetta Code
Dart ranks #22 in the TIOBE Index
Dart LSP implementation
CodeMirror package for syntax highlighting Dart
Monaco package for syntax highlighting Dart
Pygments supports syntax highlighting for Dart
GitHub supports syntax highlighting for Dart
Learn Dart on exercism.
There is a central package repository for Dart
Indeed.com has 208 matches for "dart developer".
dartlang.org was registered in 2011
See also: (24 related languages) C#, Erlang, JavaScript, Smalltalk, Strongtalk, C, Android, iOS, Eclipse, Linux, Sublime Text, Emacs, Vim, Visual Studio Code, Algol, Ruby, Self, CoffeeScript, Elm, Fantom, Go, Haxe, Opa, TypeScript
11 PLDB concepts link to Dart: Ace Editor, buzz, Candy, FlatBuffers, Flutter, mal, Open Location Code, pointless, Pygments, SMC, Wren

Example from Compiler Explorer:

// Type your code here, or load an example.
int square(int num) {
  return num * num;
}

int main(List<String> args) {
    return square(int.fromEnvironment("input"));
}

Example from Riju:

void main() {
  print('Hello, world!');
}

Example from hello-world:

main() {
  print('Hello World');
}

Example from the Hello World Collection:

// Hello world in Dart

main() {
   print('Hello world!');
}

Example from Linguist:

import 'dart:math' as math;

class Point {
  num x, y;

  Point(this.x, this.y);

  num distanceTo(Point other) {
    var dx = x - other.x;
    var dy = y - other.y;
    return math.sqrt(dx * dx + dy * dy);
  }
}

void main() {
  var p = new Point(2, 3);
  var q = new Point(3, 4);
  print('distance from p to q = ${p.distanceTo(q)}');
}

Example from Wikipedia:

// Import the math library to get access to the sqrt function.
import 'dart:math' as math;

// Create a class for Point.
class Point {

  // Final variables cannot be changed once they are assigned.
  // Create two instance variables.
  final num x, y;

  // A constructor, with syntactic sugar for setting instance variables.
  Point(this.x, this.y);

  // A named constructor with an initializer list.
  Point.origin()
      : x = 0,
        y = 0;

  // A method.
  num distanceTo(Point other) {
    var dx = x - other.x;
    var dy = y - other.y;
    return math.sqrt(dx * dx + dy * dy);
  }

  // Example of Operator Overloading
  Point operator +(Point other) => new Point(x + other.x, y + other.y);
}

// All Dart programs start with main().
void main() {
  // Instantiate point objects.
  var p1 = new Point(10, 10);
  var p2 = new Point.origin();
  var distance = p1.distanceTo(p2);
  print(distance);
}

Dart Keywords

abstract as assert async await break case catch class const continue covariant default deferred do dynamic else enum export extends external factory false final finally for get if implements import in is library new null operator part rethrow return set static super switch sync this throw true try typedef var void while with yield

Language features

Feature	Supported	Example	Token
Standard Library	✓	print('Hello, World!');
Hexadecimals	✓	// 0[xX][0-9a-fA-F]+
Conditionals	✓
Async Await	✓
Inheritance	✓
Switch Statements	✓
Exceptions	✓
Constants	✓
Classes	✓
While Loops	✓
Booleans	✓		true false
Strings	✓	'Hello world'	'
Regular Expression Syntax Sugar	✓
Print() Debugging	✓		print
Line Comments	✓	// A comment	//
Operator Overloading	✓
File Imports	✓	import 'file-system.dart'; import 'dart:math' as math;
MultiLine Comments	✓	/* A comment */	/* */
Comments	✓	// Hi /* Assume address is not null. */
Case Insensitive Identifiers	X
Semantic Indentation	X