Trait parsell::Downcast

pub trait Downcast<T: ?Sized> {
    fn downcast(self) -> T
    where
        Self: Sized;
}

A trait for subtyping where conversion downwards is possible (e.g. Cow<'a,str> can be converted to Cow<'static,str>).

Required Methods

fn downcast(self) -> T where
    Self: Sized, 

Implementors

• impl<'a, T: ?Sized> Downcast<Cow<'static, T>> for Cow<'a, T> where
    T: ToOwned, 
• impl<S1, S2, T1, T2> Downcast<(T1, T2)> for (S1, S2) where
    S1: Downcast<T1>,
    S2: Downcast<T2>, 
• impl<S, T> Downcast<Option<T>> for Option<S> where
    S: Downcast<T>, 
• impl<S, T, D, E> Downcast<Result<T, E>> for Result<S, D> where
    S: Downcast<T>,
    D: Downcast<E>, 
• impl<T> Downcast<T> for T where
    T: StaticMarker,