whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String? id, String? handle, String? title, String? onlineStoreUrl, Articles? articles,)?)

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? id,  String? handle,  String? title,  String? onlineStoreUrl,  Articles? articles)?  $default,) {final _that = this;
switch (_that) {
case _Blog() when $default != null:
return $default(_that.id,_that.handle,_that.title,_that.onlineStoreUrl,_that.articles);case _:
  return null;

}
}