public Plus(IAlt<X,CX> alt, CX empty)
{
this._alt = alt;
this.empty = empty;
}
/// <summary>
/// Constructs a <see cref="IPlus"/> value predicated on supplied data
/// </summary>
/// <typeparam name="X"></typeparam>
/// <typeparam name="CX"></typeparam>
/// <param name="functor"></param>
/// <param name="Plus"></param>
/// <returns></returns>
public static IPlus <X, CX> make <X, CX>(IAlt <X, CX> alt, CX empty)
where CX : IContainer <X>
=> new Plus <X, CX>(alt, empty);
