[boost] [ref] incompatibility with c++0x

Subject: [boost] [ref] incompatibility with c++0x
From: Andy Venikov (avenikov_at_[hidden])
Date: 2010-07-21 15:45:08

The latest c++0x FCD defines the single argument constructor for
reference_wrapper(T &) as non-explicit.

The boost version is explicit. Was it done on purpose? Should it be 
changed to non-explicit?

BTW, I think original standard drafts did have it as explicit since gcc 
4.3.3 still defines it as explicit. But in the final draft (as in gcc 
4.5) it's non-explicit.

I know that boost::reference_wrapper is not the same as 
std::reference_wrapper, but still it would be nice to have some uniformity.

Thanks,
    Andy.