Breaking News: Grepper is joining You.com. Read the official announcement!

dart set final variable in constructor

Professional Googler answered on May 28, 2020 Popularity 9/10 Helpfulness 1/10

answer dart set final variable in constructor

dart set final variable in constructor

Comment

// 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));
}

Popularity 9/10 Helpfulness 1/10 Language dart

Source: stackoverflow.com

Tags: constructor dart final set

Link to this answer
Share Copy Link