pub trait Foldable<T, U> {
type Mapped;
// Required method
fn fold<F: Fold<T, TargetU = U> + ?Sized>(
self,
folder: &mut F,
) -> Result<Self::Mapped, F::Error>;
}Required Associated Types§
Required Methods§
fn fold<F: Fold<T, TargetU = U> + ?Sized>( self, folder: &mut F, ) -> Result<Self::Mapped, F::Error>
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.