Struct IterCopiedRev

pub struct IterCopiedRev<'a, T> { /* private fields */ }

A const equivalent of iter::Rev<iter::Copied<slice::Iter<'a, T>>>

This const iterator can be created with

konst::slice::iter_copied(slice).rev()

Version compatibility

This requires the "rust_1_61" feature.

Example

use konst::iter;
use konst::slice::{self, IterCopiedRev};

const fn rfind_even(slice: &[u32]) -> Option<u32> {
    let iter: IterCopiedRev<'_, u32> = slice::iter_copied(slice).rev();
    iter::eval!(iter,find(|&elem| elem % 2 == 0))
}

assert_eq!(rfind_even(&[]), None);
assert_eq!(rfind_even(&[1]), None);
assert_eq!(rfind_even(&[1, 2]), Some(2));
assert_eq!(rfind_even(&[1, 2, 3, 4, 5]), Some(4));

Implementations

impl<'a, T> IterCopiedRev<'a, T>

where T: Copy,

pub const fn copy(&self) -> IterCopiedRev<'a, T>

Creates a clone of this iterator

pub const fn rev(self) -> IterCopied<'a, T>

Reverses the iterator

pub const fn next(self) -> Option<(T, IterCopiedRev<'a, T>)>

Advances the iterator and returns the next value.

pub const fn next_back(self) -> Option<(T, IterCopiedRev<'a, T>)>

Removes and returns an element from the end of the iterator.

pub const fn as_slice(&self) -> &'a [T]

Accesses the remaining slice.

Trait Implementations

impl<'a, T> IntoIterKind for IterCopiedRev<'a, T>

type Kind = IsIteratorKind

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes