Dart class

class Car {  
   // field 
   String engine = "E1001";  
   
   // function 
   void disp() { 
      print(engine); 
   } 
}

Source: tutorialspoint.com

Dart how to tell if an object is an instance of a class

if (emp is Person) {
  // Type check
  emp.firstName = 'Bob';
}

Source: dart.dev

Dart set final variable in constructor

// You cannot mutate final variables in a constructor body, 
// instead you must use a special syntax.
// Also note if you have a super() call, it must be called last.
class Point {
  final num x;
  final num y;
  final num distanceFromOrigin;

  // Special syntax
  Point(this.x, this.y) :
    distanceFromOrigin = sqrt(pow(x, 2) + pow(y, 2));
}

Source: stackoverflow.com

Similar codes

0 vote191 views2 answers
Dart language asynchronous ??
Dart
8 votes218 views2 answers
Flutter center row
Dart
1 vote210 views3 answers
Flutter delete file
Dart
6 votes202 views4 answers
Flutter transform
Dart
0 vote190 views1 answer
Flutter encode
Dart
1 vote205 views1 answer
How to replace commas in model array of strings in dart
Dart
1 vote183 views1 answer
Dart int double
Dart
0 vote147 views0 answer
Dart
0 vote210 views1 answer
Flutter stuck
Dart
0 vote186 views1 answer
Random.secure dart
Dart