On Sat, Aug 23, 2014 at 11:56 AM, Christophe Gragnic
> On Sat, Aug 23, 2014 at 3:13 PM, Alexander Burger <a...@software-lab.de>
>>> Is there somewhere some info about "" being NIL?
> Thanks. I knew about this links, I just wanted to know why.
>>> The language I'm trying to embed in PicoLisp would love to have
>>> "" and NIL different !
>> Why? I believe this is a wonderful feature! A lot of PicoLisp's
>> expressive power is a result of this universality of NIL.
> This kind of answers my question !
> I understand this being a power, a kind of polymorphism, like
> in Python where the boolean value of "", ,… is False.
> But in the language I design, I'd like to have separate values
> for "" and NIL. In fact, NIL doesn't exists at all!
> I'm afraid this is a big problem for me.
> Maybe I'll try with a special symbol…
If NIL doesn't exist at all, then why do you need to expose it? If
you language exposes lists or strings then empty ones carry the same
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