Trait FrontMut 

pub trait FrontMut: CollectionMut {
    // Required method
    fn front_mut(&mut self) -> Option<Self::ItemMut<'_>>;
}

Collection exposing a mutable reference to its front element.

Required Methods

fn front_mut(&mut self) -> Option<Self::ItemMut<'_>>

Get a mutable reference to the front element of the collection.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T> FrontMut for VecDeque<T>

fn front_mut(&mut self) -> Option<&mut T>

Implementors

impl<T: GetMut<usize> + Len> FrontMut for T