when<TResult extends Object?> method
- @optionalTypeArgs
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 did, @AtUriConverter() AtUri? following, @AtUriConverter() AtUri? followedBy, @AtUriConverter() AtUri? blocking, @AtUriConverter() AtUri? blockedBy, @AtUriConverter() AtUri? blockingByList, @AtUriConverter() AtUri? blockedByList, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _Relationship():
return $default(_that.$type,_that.did,_that.following,_that.followedBy,_that.blocking,_that.blockedBy,_that.blockingByList,_that.blockedByList,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}