Re: [Boost-users] [Range & c++0x Lambdas] Can this be done?

Subject: Re: [Boost-users] [Range & c++0x Lambdas] Can this be done?
From: Nathan Crookston (nathan.crookston_at_[hidden])
Date: 2012-11-29 13:02:48

Jeffrey Lee Hellrung, Jr. wrote:

> Eric Niebler wrote:
>
>> That's an interesting suggestion. (Thinking ...) It requires the ability
>> to detect the presence or absence of a nested result<> struct template.
>>
>
> Yes.
>
>
>> IIRC, this is difficult, and doesn't work on all compilers.
>
>
> It's not so different from detecting the presence of result_type;
> hopefully compilers with lambdas and weak decltype are sufficiently
> sophisticated to handle it.
>

The fallback could always be predicated on
BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE as well, though I suspect that's defined
for all compilers with decltype.

>
> Would you be willing to open a trac ticket and attach a patch?
>
>
> I can put it on the my TODO list :)
>

If you don't have time for this soon, I could probably do this tonight --
if it's not stepping on your toes. . .

Thanks,
Nate