Re: [boost] [typeof] Weird VC++ compiler bug

27 May 2015

      ---------- Forwarded message ----------
From: Andrey Semashev 
Date: 2015-05-27 16:06 GMT+02:00
Subject: Re: [boost] [typeof] Weird VC++ compiler bug
To: "boost@lists.boost.org" 

On Wed, May 27, 2015 at 4:53 PM, Andrzej Krzemienski 
wrote:
...
2015-05-23 18:33 GMT+02:00 Steven Watanabe :
...
AMDG
On 05/23/2015 09:44 AM, Peter Dimov wrote:
...
Why doesn't Typeof use decltype on VS 2013?
Probably because Typeof hasn't had a maintainer
since before decltype.  It doesn't appear to
use decltype for any compiler.
I don't think it can. The semantics of BOOST_TYPEOF is that of:
auto x = expr;
The semantics of decltype are quire different. For instance, auto and
BOOST_TYPEOF and GCC's __typeof__ never deduce references -- always
values.
decltype on the other hand can deduce references.
As long as BOOST_TYPEOF is less precise than decltype it can be
emulated, can it not?

You're right it can. I think the following would work:
typename std::decay::type

Regards,
&rzej