when<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- String? userDid,
- ModerationPrefs prefs,
- Map<
String, List< labelDefsInterpretedLabelValueDefinition> >
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? userDid, ModerationPrefs prefs, Map<String, List<InterpretedLabelValueDefinition>> labelDefs) $default,) {final _that = this;
switch (_that) {
case _ModerationOpts():
return $default(_that.userDid,_that.prefs,_that.labelDefs);case _:
throw StateError('Unexpected subclass');
}
}