On: Luau goes open-source

[junon]

Actually went ahead and wrote an RFC for this: https://github.com/Roblox/luau/pull/109

[adontz → junon]

>> Further, while >= and > can both be reversed to <= and < (and thus adding them in this RFC might be considered excessive or unnecessary)

False. You need all operators because for database NULL-alike logic you cannot infer results from one half of operators.

    NULL < NULL == false
    NULL > NULL == false

[junon → adontz]

I agree entirely, you should comment on the RFC for this usecase (binding to database objects). It would be super helpful. :)

[pansa2 → adontz]

Can’t you rewrite the second of those so it becomes the first, hence rewriting `>` into `<`?

[adontz → pansa2]

No. NULL compared to anything in any way is false.

http://sqlfiddle.com/#!4/d8fff5/14/0

http://sqlfiddle.com/#!17/9eecb/83597/0

http://sqlfiddle.com/#!18/9eecb/142653/0

[pansa2 → adontz]

You still don’t need `>` for any of those examples though, do you? For example, `NULL > 1` could be rewritten as `1 < NULL` (even though it can’t be rewritten as `not(NULL <= 1)`.

[adontz → pansa2]

What do you mean by rewritten? In

    func_a() > func_b() 

I expect left-to-right execution order. Not that it should matter in a good code, but anyway.