map<R> method

AsyncValue<R> map<R>(R mapper(T data))

Maps the data type of this AsyncValue to R while preserving the loading and error state. This can be used to add additional data to the AsyncValue.

Implementation

AsyncValue<R> map<R>(R Function(T data) mapper) {
  return switch (this) {
    AsyncData<T> curr => AsyncData<R>._(mapper(curr.data)),
    AsyncLoading<T> curr => AsyncLoading<R>._(
      curr.data != null ? mapper(curr.data as T) : null,
    ),
    AsyncError<T> curr => AsyncError<R>._(
      curr.error,
      curr.stackTrace,
      curr.data != null ? mapper(curr.data as T) : null,
    ),
  };
}