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, @BskyAppProgressGuideConverter() BskyAppProgressGuide? activeProgressGuide, List<String>? queuedNudges, @NuxConverter() List<Nux>? nuxs, Map<String, dynamic>? $unknown) $default,) {final _that = this;
switch (_that) {
case _BskyAppStatePref():
return $default(_that.$type,_that.activeProgressGuide,_that.queuedNudges,_that.nuxs,_that.$unknown);case _:
throw StateError('Unexpected subclass');
}
}