whenOrNull<TResult extends Object?> method
TResult?
whenOrNull<TResult extends Object?>(
- TResult? $default(
- String? label,
- String? ref,
- String? sha,
- GithubUserModelRef? user,
- GithubRepositoryModelRef? repo,
A variant of when
that fallback to returning null
It is equivalent to doing:
switch (sealedClass) {
case Subclass(:final field):
return ...;
case _:
return null;
}
Implementation
@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
TResult? Function(
String? label,
String? ref,
String? sha,
@refParam GithubUserModelRef? user,
@refParam GithubRepositoryModelRef? repo)?
$default,
) {
final _that = this;
switch (_that) {
case _GithubPullRequestHeadValue() when $default != null:
return $default(
_that.label, _that.ref, _that.sha, _that.user, _that.repo);
case _:
return null;
}
}