map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult httpStub(
    1. _HttpStub value
    ),
  2. required TResult genericStub(
    1. _GenericStub 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(_HttpStub value) httpStub,
  required TResult Function(_GenericStub value) genericStub,
}) {
  final _that = this;
  switch (_that) {
    case _HttpStub():
      return httpStub(_that);
    case _GenericStub():
      return genericStub(_that);
    case _:
      throw StateError('Unexpected subclass');
  }
}