when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- String $type,
- String? id,
- String value,
- List<
MutedWordTarget> targets, - MutedWordActorTarget? actorTarget,
- DateTime? expiresAt,
- Map<
String, dynamic> ? $unknown,
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 $type, String? id, String value, @MutedWordTargetConverter() List<MutedWordTarget> targets, @MutedWordActorTargetConverter() MutedWordActorTarget? actorTarget, DateTime? expiresAt, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _MutedWord():
return $default(_that.$type,_that.id,_that.value,_that.targets,_that.actorTarget,_that.expiresAt,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}