Mostly, yes (you can finagle your way out of rewriting Len and Swap if all you need to do is change the Less function, but it's probably not worth it from a cod

Mostly, yes (you can finagle your way out of rewriting Len and Swap if all you need to do is change the Less function, but it's probably not worth it from a code clarity point of view). In a million lines of code, this costs us approximately 114 extra lines of code beyond the minimum necessary for any language where you need to specify a sort order (assuming you need at least one line of code per type/sort algo to tell the computer how to sort your random list of objects). So, it depends on what you mean by a "lot".