when<TResult extends Object?> method
TResult
when<TResult extends Object?>()
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 json, String type) $default,
) {
final _that = this;
switch (_that) {
case _ResponseModel():
return $default(_that.json, _that.type);
}
}