whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. bool adultContentEnabled,
    2. Map<String, LabelPreference> labels,
    3. List<ModerationPrefsLabeler> labelers,
    4. List<MutedWord> mutedWords,
    5. List<String> hiddenPosts,
    )?
)

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( bool adultContentEnabled,  Map<String, LabelPreference> labels,  List<ModerationPrefsLabeler> labelers,  List<MutedWord> mutedWords,  List<String> hiddenPosts)?  $default,) {final _that = this;
switch (_that) {
case _ModerationPrefs() when $default != null:
return $default(_that.adultContentEnabled,_that.labels,_that.labelers,_that.mutedWords,_that.hiddenPosts);case _:
  return null;

}
}