Boost C++ Libraries: Ticket #4832: C++0x lambdas do not work as argument to Boost::Range's transformed adaptor

attachment set

Wed, 10 Nov 2010 11:22:11 GMT

attachment → lambda.patch

patch for boost/utility/result_of.hpp

version changed

Wed, 10 Nov 2010 11:24:27 GMT

version Boost 1.44.0 → Boost Development Trunk

owner, component changed

Neil Groves — Sun, 14 Nov 2010 17:43:53 GMT

owner changed from Neil Groves to Douglas Gregor
component range → utility

I have recently reaalized the solution requires a modification to result_of rather than a change to Boost.Range.

Sun, 14 Nov 2010 22:10:20 GMT

Replying to neilgroves:

I have recently reaalized the solution requires a modification to result_of rather than a change to Boost.Range.

Agree. It seems that range lib in trunk started to use boost's result_of (compared to its own implementation in 1.44). My patch addresses variant with a single argument for VC 2010 and needs to be extended for multiple arguments using standard "preprocessor magic". If I get a working variant for multiple arguments, I will update the ticket.

Steven Watanabe — Fri, 11 Feb 2011 03:53:52 GMT

If the compiler has decltype, most of the logic in result_of is unnecessary.

status changed; resolution set

Sat, 20 Aug 2011 06:58:39 GMT

status new → closed
resolution → worksforme

With BOOST_RESULT_OF_USE_DECLTYPE, boost::result_of and C++0x lambdas work fine. Please see the documentation for usage of BOOST_RESULT_OF_USE_DECLTYPE: http://www.boost.org/doc/libs/1_47_0/libs/utility/utility.htm#result_of

(On Visual Studio 2010, using BOOST_RESULT_OF_USE_DECLTYPE works fine with Boost 1.47 and trunk. But it might not work with older versions of Boost, since BOOST_NO_DECLTYPE is defined for that compiler. )