Re: [boost] Interesting variadic template trick

Subject: Re: [boost] Interesting variadic template trick
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2013-11-19 16:38:25

On 20/11/2013 03:13, Quoth Mathias Gaunard:
>>      template <typename ...T>
>>      struct or_ {
>>          static constexpr bool value = !noexcept(
>>              allow_expansion((T::value ? throw : 0)...)
>>          );
>>      };
>
> An obvious problem with this is that it doesn't compile if exceptions
> are disabled.
> And I think being able to use meta-programming without exceptions is an
> important property to have.

If you look at the followup, it doesn't use noexcept any more.