Function std::iter::empty

pub const fn empty<T>() -> Empty<T>ⓘNotable traits for Empty<T>impl<T> Iterator for Empty<T>    type Item = T;

Creates an iterator that yields nothing.

Examples

Basic usage:

use std::iter;

// this could have been an iterator over i32, but alas, it's just not.
let mut nope = iter::empty::<i32>();

assert_eq!(None, nope.next());