Henry said >>>> It's not broken, but certainly deserves a comment as to why it operates inline; In the general case, one should not use/care about any given permutation outside the block. Allocating n! instances of an n-sized array by default, is a bad tradeoff considering performance degradation for uses where n >> 3. In the first case, a user can add a simple #copy, while in the second case, a user would probably want/have to reimplement the method entirely. <<<
Thanks, that makes perfect sense. I will have a go at adding a suitable comment. Cheers Andy >
