protected override bool FilterInternal(T item, Filterer <T> f1, Filterer <T> f2) { return(f1.Filter(item) || f2.Filter(item)); }
protected override bool FilterInternal(T item, Filterer <T> f) { return(f.Filter(item) == false); }
protected override bool FilterInternal(T item, Filterer <T> f1, Filterer <T> f2) { return(f1.Filter(item) || f2.Filter(item)); }
protected override bool FilterInternal(T item, Filterer <T> f) { return(f.Filter(item) == false); }