when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult listViewBasic(
    1. ListViewBasic data
    ),
  2. required TResult listView(
    1. ListView data
    ),
})

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?>({required TResult Function( ListViewBasic data)  listViewBasic,required TResult Function( ListView data)  listView,}) {final _that = this;
switch (_that) {
case UModerationSubjectUserListListViewBasic():
return listViewBasic(_that.data);case UModerationSubjectUserListListView():
return listView(_that.data);case _:
  throw StateError('Unexpected subclass');

}
}