Dart Online Compiler

Compile and run Dart programs with our modern Dart compiler. Perfect for Flutter development, web applications, and learning Dart's powerful features.

dart Online Compiler

void main() {
  print('Hello, World!');
  print('Welcome to Dart Online Compiler');
  
  // Variables and types
  String language = 'Dart';
  double version = 3.2;
  bool isModern = true;
  
  print('Language: $language');
  print('Version: $version');
  print('Modern: $isModern');
  
  // Lists and collections
  List<int> numbers = [1, 2, 3, 4, 5];
  print('Numbers: $numbers');
  
  // Higher-order functions
  var squares = numbers.map((n) => n * n).toList();
  print('Squares: $squares');
  
  var evenNumbers = numbers.where((n) => n % 2 == 0).toList();
  print('Even numbers: $evenNumbers');
  
  // Classes and objects
  var person = Person('Developer', 26);
  person.introduce();
  person.haveBirthday();
  
  // Null safety
  String? nullableName = 'Dart Developer';
  print('Name: ${nullableName ?? "Unknown"}');
  
  // Async programming (simulated)
  print('Fetching data...');
  fetchData().then((data) => print('Data: $data'));
  
  // Collections and iteration
  Map<String, int> scores = {
    'Alice': 95,
    'Bob': 87,
    'Charlie': 92
  };
  
  print('Scores:');
  scores.forEach((name, score) {
    print('  $name: $score');
  });
  
  // Extension methods
  print('Is 17 prime? ${17.isPrime}');
  print('Is 20 prime? ${20.isPrime}');
  
  // Pattern matching (Dart 3.0+)
  var result = analyzeNumber(42);
  print('Analysis: $result');
}

class Person {
  String name;
  int age;
  
  Person(this.name, this.age);
  
  void introduce() {
    print('Hi, I\'m $name and I\'m $age years old.');
  }
  
  void haveBirthday() {
    age++;
    print('Happy birthday! Now I\'m $age years old.');
  }
}

Future<String> fetchData() async {
  // Simulate async operation
  await Future.delayed(Duration(milliseconds: 100));
  return 'Sample data from API';
}

extension PrimeChecker on int {
  bool get isPrime {
    if (this < 2) return false;
    for (int i = 2; i <= this ~/ 2; i++) {
      if (this % i == 0) return false;
    }
    return true;
  }
}

String analyzeNumber(int number) {
  return switch (number) {
    < 0 => 'negative',
    0 => 'zero',
    1 => 'one',
    > 1 && < 10 => 'small positive',
    >= 10 && < 100 => 'medium positive',
    _ => 'large positive'
  };
}

Output

Click "Run" to execute your code and see the output here...

Future<String> fetchData() async {
  // Simulate async operation
  await Future.delayed(Duration(milliseconds: 100));
  return 'Sample data from API';
}

extension PrimeChecker on int {
  bool get isPrime {
    if (this < 2) return false;
    for (int i = 2; i <= this ~/ 2; i++) {
      if (this % i == 0) return false;
    }
    return true;
  }
}

Dart Compiler Features

Dart 3.2 with null safety
Async/await programming
Strong typing and type inference
Extension methods and mixins
Pattern matching (Dart 3.0+)

About Dart Programming

Dart is a client-optimized programming language developed by Google for building fast apps on any platform. It's the language behind Flutter, Google's UI toolkit for mobile, web, and desktop applications.

Dart combines the best of both worlds: the productivity of a dynamic language with the performance and reliability of a statically typed language. It features null safety, async programming, and hot reload.

Use our Dart online compiler to develop Flutter applications, learn modern programming concepts, or prototype cross-platform apps without installing the Dart SDK locally.