map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult idle(
    1. Idle<T, F> value
    ),
  2. required TResult loading(
    1. Loading<T, F> value
    ),
  3. required TResult error(
    1. Error<T, F> value
    ),
  4. required TResult success(
    1. Success<T, F> value
    ),
})

A switch-like method, using callbacks.

Callbacks receives the raw object, upcasted. It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case final Subclass2 value:
    return ...;
}

Implementation

@optionalTypeArgs TResult map<TResult extends Object?>({required TResult Function( Idle<T, F> value)  idle,required TResult Function( Loading<T, F> value)  loading,required TResult Function( Error<T, F> value)  error,required TResult Function( Success<T, F> value)  success,}){
final _that = this;
switch (_that) {
case Idle():
return idle(_that);case Loading():
return loading(_that);case Error():
return error(_that);case Success():
return success(_that);case _:
  throw StateError('Unexpected subclass');

}
}