Methods in DART

This is drectly from Dartlang.tour  27.9.2012,  spec is just changing

dartlang.org     check last changes!   

Methods

Methods are functions that provide behavior for an object.

Instance methods

Instance methods on objects can access instance variables and this. The distanceTo() method in the following sample is an example of an instance method.

#import('dart:math');

class Point {
  num x, y;
  Point(this.x, this.y);

  num distanceTo(Point other) {
    return sqrt(((x-other.x)*(x-other.x)) + ((y-other.y)*(y-other.y)));
  }
}

Here’s how you invoke the distanceTo() method on an instance of Point:

var point = new Point(2, 2); num distance = point.distanceTo(new Point(4,4)); assert(distance < 2.9 && distance > 2.8);