Trait TryExt
iterable
pub trait TryExt: Try { type Map: TryExt<Output = U, Residual = Self::Residual>; }
type Map: TryExt<Output = U, Residual = Self::Residual>
impl<T, E> TryExt for Result<T, E>
type Map = Result<U, E>
impl<T> TryExt for Option<T>
type Map = Option<U>