Re: [boost] BOOST_STATIC_CONSTANT

Subject: Re: [boost] BOOST_STATIC_CONSTANT
From: Vladimir Batov (Vladimir.Batov_at_[hidden])
Date: 2017-08-17 01:58:18

On 2017-08-17 11:45, Gavin Lambert via Boost wrote:
> On 17/08/2017 13:27, Glen Fernandes wrote:
>> This is to detect a member 'impl_ptr_type' type? Just:
>> 
>>      template<class, class = void>
>>      struct has_impl_ptr_type
>>          : boost::false_type { };
>>      template<class T>
>>      struct has_impl_ptr_type<T, boost::void_t<typename 
>> T::impl_ptr_type> >
>>          : boost::true_type { };
> 
> That *is* a nicer way to do it.  Requires a minimum of Boost 1.64 or
> C++17, though.  (Or VS2015, apparently.)

Yes, I liked it too. :-) Thanks, Glen.