maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult postView(
    1. PostView data
    )?,
  2. TResult notFoundPost(
    1. NotFoundPost data
    )?,
  3. TResult blockedPost(
    1. BlockedPost data
    )?,
  4. TResult unknown(
    1. Map<String, dynamic> data
    )?,
  5. 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( PostView data)?  postView,TResult Function( NotFoundPost data)?  notFoundPost,TResult Function( BlockedPost data)?  blockedPost,TResult Function( Map<String, dynamic> data)?  unknown,required TResult orElse(),}) {final _that = this;
switch (_that) {
case UReplyRefRootPostView() when postView != null:
return postView(_that.data);case UReplyRefRootNotFoundPost() when notFoundPost != null:
return notFoundPost(_that.data);case UReplyRefRootBlockedPost() when blockedPost != null:
return blockedPost(_that.data);case UReplyRefRootUnknown() when unknown != null:
return unknown(_that.data);case _:
  return orElse();

}
}