when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? firstName,
    2. String? lastName,
    3. String? displayName,
    4. String? dateOfBirth,
    5. String? gender,
    6. String? username,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String? firstName,  String? lastName,  String? displayName,  String? dateOfBirth,  String? gender,  String? username)  $default,) {final _that = this;
switch (_that) {
case _Profile():
return $default(_that.firstName,_that.lastName,_that.displayName,_that.dateOfBirth,_that.gender,_that.username);case _:
  throw StateError('Unexpected subclass');

}
}