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", so this trait is not object safe.

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]>