undoredo 0.8.24

Delta-based undo-redo decorator for collections such as HashMap, BTreeMap, StableVec, thunderdome::Arena, rstar::RTree. No need to implement commands.
Documentation 
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// SPDX-FileCopyrightText: 2025 undoredo contributors
//
// SPDX-License-Identifier: MIT OR Apache-2.0

use std::collections::BTreeMap;

use stable_vec::StableVec;
use undoredo::{Recorder, UndoRedo};

fn main() {
    let mut recorder: Recorder<StableVec<char>, BTreeMap<usize, char>> =
        Recorder::new(StableVec::new());
    let mut undoredo: UndoRedo<BTreeMap<usize, char>> = UndoRedo::new();

    recorder.push('A');
    undoredo.commit(recorder.flush_delta());

    recorder.push('B');
    recorder.push('B');
    undoredo.commit(recorder.flush_delta());

    let key = recorder.push('X');
    recorder.remove(&key);
    recorder.push('C');
    undoredo.commit(recorder.flush_delta());

    assert!(
        recorder
            .collection()
            .values()
            .copied()
            .eq(['A', 'B', 'B', 'C'])
    );

    undoredo.undo(&mut recorder);
    assert!(recorder.collection().values().copied().eq(['A', 'B', 'B']));

    undoredo.undo(&mut recorder);
    assert!(recorder.collection().values().copied().eq(['A']));

    undoredo.redo(&mut recorder);
    assert!(recorder.collection().values().copied().eq(['A', 'B', 'B']));

    undoredo.redo(&mut recorder);
    assert!(
        recorder
            .collection()
            .values()
            .copied()
            .eq(['A', 'B', 'B', 'C'])
    );
}

#[test]
fn test() {
    main();
}