tommy-carlier

public class EfficientIterator<TOne, TTwo>
{
    private Action<TOne, TTwo> always = (one, two) => { };
    private Action<TOne, TTwo> match = (one, two) => { };
    private Action<TOne> oneOnly = (one) => { };
    private Action<TTwo> twoOnly = (two) => { };
    
    private readonly Func<TOne, TTwo, int> compare;

    public Action<TOne, TTwo> Always { set { this.always = value; } }