Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5279: [Foreach] Compile-time const rvalue detection fails with gcc 4.6
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-03-08 17:05:29
#5279: [Foreach] Compile-time const rvalue detection fails with gcc 4.6
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Reporter: mimomorin@⦠| Owner: eric_niebler
Type: Patches | Status: assigned
Milestone: Boost 1.47.0 | Component: foreach
Version: Boost Development Trunk | Severity: Problem
Resolution: | Keywords:
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Comment (by mimomorin@â¦):
Yeah, with the C++0x features (`-std=c++0x`), we can easily detect
rvalueness.
Personally, I use the following code for rvalue detection
{{{
#ifndef BOOST_NO_DECLTYPE
#define BOOST_IS_LVALUE(xxx) boost::is_lvalue_reference<decltype( (xxx)
)>::value
#define BOOST_IS_RVALUE(xxx) (!BOOST_IS_LVALUE(xxx))
#endif
}}}
Is it better to develop a method that only needs rvalue reference support
(i.e. without using the decltype feature)?
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/5279#comment:2> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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