Dart Programming Examples

Execute DART Online

dart

/* Simple Hello, World! program */
void main(){
   print("Hello, World!");
}

Dart

dart

import 'dart:core'; 
void main(){ 
   f2(); 
} 
f2() { 
   String x = 'Runes'; 
   print(x.codeUnitAt(0)); 
}

Execute DART Online

dart

import 'dart:io';

void main(){
   var now = new DateTime.now();
   var inp1 = stdin.readLineSync();
   var inp2 = stdin.readLineSync();
   var inp3 = stdin.readLineSync();
   var userday = int.parse(inp1);
   assert(userday is int);
   var usermonth = int.parse(inp2);
   assert(usermonth is int);
   var useryear = int.parse(inp3);
   assert(useryear is int);
   var userbirthday = new DateTime.utc(useryear, usermonth, userday);
   var difference = now.difference(userbirthday);
   print("Your birthdate:");
   print(userbirthday);
   print("Seconds lived:");
   print(difference.inSeconds);
   print("Minutes lived:");
   print(difference.inMinutes);
   print("Hours lived:");
   print(difference.inHours);
   print("Days lived:");
   print(difference.inDays);
   print("Months lived:");
   print(difference.inDays~/30);
   print("Years lived");
   print(difference.inDays~/365);
}

Calc in Dart

dart

void main() {
 calc('+', 2, 2);
}
calc (String operator, dynamic num01, num02) {
  if(isNumber(num01) && isNumber(num02)) {
     switch (operator) {
      case '+':
        print('$num01 + $num02 = ${add(num01, num02)}');
        break;
      case '-':
        print('$num01 - $num02 = ${subtract(num01, num02)}');
        break;
      case '/':
        print('$num01 / $num02 = ${divide(num01, num02)}');
        break;
      case '*':
        print('$num01 X $num02 = ${multiply(num01, num02)}');
        break;
      default:
        executeDown();
    }
  }else{
    invalid();
  }
  
}

add(dynamic num01, num02) {
 return num01 + num02;
}
subtract(dynamic num01, num02) {
 return num01 - num02;
}
divide(dynamic num01, num02) {
 return num01 / num02;
}
multiply(dynamic num01, num02) {
 return num01 * num02;
}
isNumber(val){
  if(val is num){
    return true;
  }else {
    return false;
  }
}
executeDown(){
  print('Você precisa informar um operador valido.');
}
invalid() {
  print('Verifique os valores informados. Necessário que sejam númerais.');
}

hi narendra

dart

void main() { 
   int a = 10, b = 20, c = 5; 
   c = c * c * c; 
   print("$a + $b = ${a+b}"); 
   print("$a%$b = ${a%b}");  // Add a break point here 
   print("$a*$b = ${a*b}"); 
   print("$a/$b = ${a/b}"); 
   print(c); 
}

lllk

dart

void main() { 
   int a = 10, b = 20, c = 5; 
   c = c * c * c; 
   print("$a + $b = ${a+b}"); 
   print("$a%$b = ${a%b}");  // Add a break point here 
   print("$a*$b = ${a*b}"); 
   print("$a/$b = ${a/b}"); 
   print(c); 
}

Execute DART Online

dart

/* Simple Hello, World! program */
void main(){
   print("Hello, World!");
   
   print (200/3);
   
   print (A7Df);
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
}

Execute DART Online

dart

/* Simple Hello, World! program */
void main(){
   print("Hello, World!");
}

Dart Programming - Constructors

dart

void main() { 
   Car c = new Car('E1001'); 
} 
class Car { 
   Car(String engine) { 
      print(engine); 
   } 
}

Dart Programming - Implementing an Interface

dart

void main() { 
   ConsolePrinter cp= new ConsolePrinter(); 
   cp.print_data(); 
}  
class Printer { 
   void print_data() { 
      print("__________Printing Data__________"); 
   } 
}  
class ConsolePrinter implements Printer { 
   void print_data() {  
      print("__________Printing to Console__________"); 
   } 
}

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