[Creating a constructor within a class] #dart #class #constructor

example_class_constructor.dart

const $1({p1,p2,...,pn}): assert(condition(p1)),super(p1);
//$1 - Enclosing Class Name.
//p1...pn - Parameters to pass to the constructor.

const MyWidget({Key key,
                @required this.name,
                @required this.color,
                @required this.iconLocation,
                  }) : assert(name != null),
                       assert(color != null),
                       assert(iconLocation != null),
                       super(key: key);