Re: [Boost-bugs] [Boost C++ Libraries] #12003: Implement is_constrructible<T, U> -- no variadics

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #12003: Implement is_constrructible<T, U> -- no variadics
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-03-05 22:32:36

#12003: Implement is_constrructible<T, U> -- no variadics
-------------------------------+-------------------------
  Reporter:  akrzemi1          |      Owner:  johnmaddock
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  type_traits
   Version:  Boost 1.61.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+-------------------------

Comment (by akrzemi1):

 Visual Studio for, I think, two releases supported `decltype` but no
 variadic templates. I really had this compiler in mind.

 Whether this makes sense or not is one question, but the other question
 remains. It is not strictly in the scope of this library, but could you
 give me a macro that says if the is_constructible works correctly or falls
 back to a negative default? Currently I had to repeat the long #if from
 is_constructible.hpp, as I cannot rely on the 'safe' default.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12003#comment:5>
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