Which Lua has also, for strings, and it's quite convenient. Doesn't work for tables, though, because you can actually put something at foo[-1], which can be us

Which Lua has also, for strings, and it's quite convenient. Doesn't work for tables, though, because you can actually put something at foo[-1], which can be useful. I find that foo[#foo+1] is more common than foo[#foo] in my code, that is to say I add to an array more often than I access the last slot. Although I typically use the idiomatic table.insert(foo, bar) instead— but that's mostly because it's slightly awkward to add the +1 all the time.