mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? skeletonReasonRepost(
    1. USkeletonFeedPostReasonSkeletonReasonRepost value
    )?,
  2. TResult? skeletonReasonPin(
    1. USkeletonFeedPostReasonSkeletonReasonPin value
    )?,
  3. TResult? unknown(
    1. USkeletonFeedPostReasonUnknown value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( USkeletonFeedPostReasonSkeletonReasonRepost value)?  skeletonReasonRepost,TResult? Function( USkeletonFeedPostReasonSkeletonReasonPin value)?  skeletonReasonPin,TResult? Function( USkeletonFeedPostReasonUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case USkeletonFeedPostReasonSkeletonReasonRepost() when skeletonReasonRepost != null:
return skeletonReasonRepost(_that);case USkeletonFeedPostReasonSkeletonReasonPin() when skeletonReasonPin != null:
return skeletonReasonPin(_that);case USkeletonFeedPostReasonUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}