Trait PeekableExt 

pub trait PeekableExt: Iterator {
    // Required method
    fn peek(&mut self) -> Option<&Self::Item>;
}

A trait for iterators that support peeking at the next item without consuming it.

Required Methods

fn peek(&mut self) -> Option<&Self::Item>

Peek at the next item without consuming it.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<I> PeekableExt for Peekable<I>

where I: Iterator,

fn peek(&mut self) -> Option<&Self::Item>

Implementors

impl<I> PeekableExt for Checkpoint<I>

where I: Iterator + PeekableExt, I::Item: Clone,