On Wed, Oct 24, 2012 at 11:58 AM, Patrick Walton <[email protected]>wrote:

> On 10/24/12 11:51 AM, Nathan wrote:
>
>> Therefore I'd propose that the purity keyword must be present and match
>> the purity inference in every context where a type signature must be
>> present to match the type inference.
>>
>
> -1 on this. I think that it's often quite useful to reserve the right to
> make a presently-pure function impure later without breaking callers. When
> commenting out code, for example.
>
> Patrick
>
>
>

Wouldn't that (semantically) break code that relied on the functions being
called being pure?

--
Ziad
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