Re: [boost] [result_of] Allow result_of to work with C++11 lambdas

Daniel Walker wrote:

On Apr 21, 2013, at 10:36 PM, Peter Dimov wrote:

...

I can't think of a reason to ever use TR1 (and whichever version of result_of) in C++11. Even less so in C++14, which will have deduced return types unless the N3638 formal motion failed, and I very much hope it did not.

Agreed, and we recommend in the boost::result_of documentation that C++11 users use std::result_of rather than boost::result_of.

I actually meant that C++11 users should use decltype directly rather than result_of. A library that wanted to support both would do something like template<...> #if C++11 auto f(...) -> decltype(...) #else boost::result_of<...>::type f(...) #endif { ... } That's not very nice as it forces you to write everything twice, but it keeps C++11 users isolated from anything C++03-related. In particular, it no longer matters whether boost::result_of works with lambdas. (Well... it could matter if decltype is not N32whatever but lambdas work fine, but ideally, it shouldn't.)