length method

  1. @override
Future<ResourceTry<int>> length()

Returns data length from metadata if available, or calculated from reading the bytes otherwise.

This value must be treated as a hint, as it might not reflect the actual bytes length. To get the real length, you need to read the whole resource.


Future<ResourceTry<int>> length() async =>
    (await read()).map((it) => it.lengthInBytes);