Trait IteratorRefSpec

trait IteratorRefSpec: Iterator {
    // Required methods
    fn spec_fold<B, F>(self, init: B, f: F) -> B
       where F: FnMut(B, Self::Item) -> B;
    fn spec_try_fold<B, F, R>(&mut self, init: B, f: F) -> R
       where F: FnMut(B, Self::Item) -> R,
             R: Try<Output = B>;
}

Helper trait to specialize fold and try_fold for &mut I where I: Sized

Required Methods

fn spec_fold<B, F>(self, init: B, f: F) -> B

where F: FnMut(B, Self::Item) -> B,

fn spec_try_fold<B, F, R>(&mut self, init: B, f: F) -> R

where F: FnMut(B, Self::Item) -> R, R: Try<Output = B>,

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.

Implementors

impl<I: Iterator + ?Sized> IteratorRefSpec for &mut I

impl<I: Iterator> IteratorRefSpec for &mut I