maybeWhen<TResult extends Object?> method
- @optionalTypeArgs
- TResult $default(
- String url,
- MessageContentImageDetail detail
- required TResult orElse(),
A variant of when
that fallback to an orElse
callback.
It is equivalent to doing:
switch (sealedClass) {
case Subclass(:final field):
return ...;
case _:
return orElse();
}
Implementation
@optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
TResult Function(String url, MessageContentImageDetail detail)? $default, {
required TResult orElse(),
}) {
final _that = this;
switch (_that) {
case _MessageContentImageUrl() when $default != null:
return $default(_that.url, _that.detail);
case _:
return orElse();
}
}