Function std::iter::empty

1.2.0 (const: 1.32.0)· source [−]

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

Expand description

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());

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