pub type Result<T = Response, E = Error> = Result<T, E>;
Result
impl<T> Extract for Result<T, T::Error> where T: Extract,
type Error = T::Error
The type of failures extracted by this Extractor.
fn extract<'a>(cx: &'a mut Context) -> BoxFuture<'a, Result<Self, Self::Error>>
Extract the value from Context.