On Mon, Jun 1, 2015 at 12:58 PM, Matt Oliveri <atma...@gmail.com> wrote:
> On Mon, Jun 1, 2015 at 3:36 PM, Matt Rice <ratm...@gmail.com> wrote:
>> On Mon, Jun 1, 2015 at 11:47 AM, Matt Oliveri <atma...@gmail.com> wrote:
>>> On Mon, Jun 1, 2015 at 2:13 PM, Matt Rice <ratm...@gmail.com> wrote:
>>>> On Mon, Jun 1, 2015 at 10:58 AM, Matt Oliveri <atma...@gmail.com> wrote:
>>>>> With this syntax, foo can refer to bar.
>>>>
>>>> I know at the top you say mutually recursive, but
>>>> wrt the last line, foo and bar can both refer to each other..
>>>
>>> Indeed. So in particular, foo can refer to bar. :) What I was trying
>>> to say is that explicitly-marked mutually recursive definitions are
>>> when OCaml lets you have forward references.
>>>
>>> If you can have a forward reference any old time, it doesn't mean you
>>> don't have mutually recursive types, it means you have them without
>>> even saying so.
>>
>> I'd have to go look at the original bitc compiler and try again, but
>> IIRC it had forward references but I was never able to get mutually
>> recursive types out of it without infinite source code :)
>
> Hmm. Well I've never tried the old bitc. I suppose it could forbid
> mutually recursive types, but I don't see why you'd want to do that,
> if you have regular recursive types.

I believe it was in fact a bug in the type environment lookup that,
I was just trying to point out that because we have both forward
references, and back references, need not necessarily imply that we in
fact have loops, I will give that that is how it usually works yes...
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