Trait UndoStrategy 

pub trait UndoStrategy<T> {
    type History: Default;

    const UNDOABLE: bool;

    // Required methods
    fn unite(history: &mut Self::History, x: usize, y: usize, cells: &[T]);
    fn undo_unite(history: &mut Self::History, cells: &mut [T]);
}

Required Associated Constants

const UNDOABLE: bool

Required Associated Types

type History: Default

Required Methods

fn unite(history: &mut Self::History, x: usize, y: usize, cells: &[T])

fn undo_unite(history: &mut Self::History, cells: &mut [T])

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> UndoStrategy<T> for ()

const UNDOABLE: bool = false

type History = ()

fn unite(_history: &mut Self::History, _x: usize, _y: usize, _cells: &[T])

fn undo_unite(_history: &mut Self::History, _cells: &mut [T])

Implementors

impl<T> UndoStrategy<T> for Undoable

where T: Clone,

const UNDOABLE: bool = true

type History = Vec<[(usize, T); 2]>