Trait Front 

pub trait Front: CollectionRef {
    // Required method
    fn front(&self) -> Option<Self::ItemRef<'_>>;
}

Collection exposing a reference to its front element.

Required Methods

fn front(&self) -> Option<Self::ItemRef<'_>>

Get a 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", so this trait is not object safe.

Implementations on Foreign Types

impl<T> Front for VecDeque<T>

fn front(&self) -> Option<&T>

Implementors

impl<T: Get<usize> + Len> Front for T