r3dm1ke

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

r3dm1ke

void main() {
  // Create a variable name of type String
  var name = 'John';
  
  // Create a variable last_name of type String
  String last_name = 'Smith';
  
  // Create a dynamic variable age, which is of type int for now
  dynamic age = 18; 
  

r3dm1ke

void main() {
  // This is an inline comment
  var a = 5;
  /* This
     is
     a
     multilne
     comment
   */
}

r3dm1ke

import 'dart:html';         // Import dart's standart HTML processing library
import '../lib/mylib.dart'; // Import your own file from another folder

r3dm1ke

class Computer {
  String hostname;
  int numberOfCores;

  // Syntactic sugar for instance variable assignment
  Computer(this.hostname, this.numberOfCores) {
    // Some initialization code
  }

  void ping() {

r3dm1ke

class MacPro extends Computer {
    double price;
  
    MacPro(String hostname, int numberOfCores, this.price) : super(hostname, numberOfCores);
}

r3dm1ke

mixin Battery {
  int level = 100;
  
  void die() {
    this.level = 0;
  }
}

class Laptop extends Computer with Battery {
  //...

r3dm1ke

class MockComputer extends Computer {
    //....
}

r3dm1ke

abstract class Chargeable {
    charge();    // Abstract method

    fastCharge() {
        print('Gotta go fast');
        charge();    // Call to child's implemented method
    }
}

r3dm1ke

// Creating a time duration of 1 minute
const oneMinute = Duration(minutes: 1);
// ...
Future<void> printWithDelay(String msg) async {
  // Wait for one minute
  await Future.delayed(oneMinute);
  print(msg);
}