when<TResult extends Object?> method

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

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(@JsonKey(name: 'firstName')  Name? firstName, @JsonKey(name: 'lastName')  Name? lastName, @JsonKey(name: 'dateOfBirth')  String? dateOfBirth, @JsonKey(name: 'gender', unknownEnumValue: Gender.unknown)  Gender? gender)  $default,) {final _that = this;
switch (_that) {
case _BioData():
return $default(_that.firstName,_that.lastName,_that.dateOfBirth,_that.gender);case _:
  throw StateError('Unexpected subclass');

}
}