Trait Stack 

pub trait Stack: Debug {
    type Error: Copy + Debug;

    // Required methods
    fn empty() -> Self;
    fn depth(&self) -> usize;
    fn peek(&self) -> Option<State>;
    fn pop(&mut self) -> Option<State>;
    fn push(&mut self, item: State) -> Result<(), Self::Error>;
}

A trait representing a stack.

Required Associated Types

type Error: Copy + Debug

This stack’s error type.

Required Methods

fn empty() -> Self

Create an empty stack.

fn depth(&self) -> usize

The current stack depth.

fn peek(&self) -> Option<State>

Peek at the current item on the stack.

fn pop(&mut self) -> Option<State>

Pop the next item from the stack.

fn push(&mut self, item: State) -> Result<(), Self::Error>

Push an item onto the stack.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<const ONE_FOURTH_OF_MAX_DEPTH: usize> Stack for ConstStack<ONE_FOURTH_OF_MAX_DEPTH>

type Error = StackError