Dart Programming Examples

Dart Programming - Returning Function

dart

void main() { 
   print(test()); 
}  
String test() { 
   // function definition 
   return "hello world"; 
}

Dart Programming - Calling a Function

dart

void main() { 
   test(); 
}  
test() { 
   //function definition 
   print("function called"); 
}

Dart Programming - Enumeration

dart

enum Status { 
   none, 
   running, 
   stopped, 
   paused 
}  
void main() { 
   print(Status.values); 
   Status.values.forEach((v) => print('value: $v, index: ${v.index}'));
   print('running: ${Status.running}, ${Status.running.index}'); 
   print('running index: ${Status.values[1]}'); 
}

Dart Programming - constructor of the Runes class

dart

main() { 
   Runes input = new Runes( 
      ' \u{1f605}  '); 
   print(new String.fromCharCodes(input)); 
}

Dart Programming - String.runes Property

dart

void main(){ 
   "A string".runes.forEach((int rune) { 
      var character=new String.fromCharCode(rune); 
      print(character); 
   });  
}

Dart Programming - String.codeUnits Property

dart

import 'dart:core';  
void main(){ 
   f1(); 
}  
f1() { 
   String x = 'Runes'; 
   print(x.codeUnits); 
}

Dart Programming - String.codeUnitAt() Function

dart

import 'dart:core'; 
void main(){ 
   f1(); 
} 
f1() { 
   String x = 'Runes'; 
   print(x.codeUnitAt(0)); 
}

Dart Programming - Symbol

dart

import 'dart:mirrors'; 
void main(){ 
   Symbol lib = new Symbol("foo_lib"); 
   String name_of_lib = MirrorSystem.getName(lib); 
   print(lib); 
   print(name_of_lib); 
}

Dart Programming - Map.forEach() Function

dart

void main() { 
   var usrMap = {"name": "Tom", 'Email': '[email protected]'}; 
   usrMap.forEach((k,v) => print('${k}: ${v}')); 
}

Dart Programming - Map.remove() Function

dart

void main() { 
   Map m = {'name':'Tom','Id':'E1001'}; 
   print('Map :${m}'); 
   dynamic res = m.remove('name'); 
   print('Value popped from the Map :${res}'); 
}

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