when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- ModerationCauseSource source,
- int priority,
- bool downgraded
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( ModerationCauseSource source, int priority, bool downgraded) $default,) {final _that = this;
switch (_that) {
case _ModerationCauseBlockedBy():
return $default(_that.source,_that.priority,_that.downgraded);case _:
throw StateError('Unexpected subclass');
}
}