Re: [boost] [IdentityType] Const omission undocumented.

On Tue, Dec 3, 2013 at 1:39 PM, Mostafa wrote:

On Tue, 03 Dec 2013 11:23:46 -0800, Krzysztof Czainski <1czajnik@gmail.com>

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2013/12/3 Lorenzo Caminiti

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On Sat, Nov 16, 2013 at 11:18 AM, Mathias Gaunard wrote:

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On 16/11/2013 01:02, Mostafa wrote: That looks like a bug.

Is there a way to extract the cv-qualifier from a function parameter type at compile-time?

how about (not tested): boost::remove_reference< boost::function_traits::arg1_type >::type

Pointers should be used instead. References will lead to bugs because of reference collapsing when add_reference is used. For example:

BOOST_IDENTITY_TYPE(( std::pair & )) x;

will be incorrectly deduced as std::pair

I can't change the tokens "(int const)" because these are specified by the user of BOOST_IDENTITY_TYPE(tokens) (and I cannot inspect them within the outermost parenthesis without variadic macros, which is the point of Boost.IdentityType). So I cannot do (int const&), (int const*), etc :( --Lorenzo