transposeResultToOption
Transposes a Result of an Option into an Option of a Result.
Ok(Some(v))->Some(Ok(v))Ok(None)->NoneErr(e)->Some(Err(e))
Transposes a Result of an Option into an Option of a Result.
Ok(Some(v)) -> Some(Ok(v))Ok(None) -> NoneErr(e) -> Some(Err(e))