map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>()

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?>(){
final _that = this;
switch (_that) {
case _:
  throw StateError('Unexpected subclass');

}
}