Re: [boost] rvalue ref best practices?

Subject: Re: [boost] rvalue ref best practices?
From: Peter Dimov (pdimov_at_[hidden])
Date: 2012-06-12 16:54:22

Mathias Gaunard wrote:
> On 06/12/2012 06:05 PM, Dave Abrahams wrote:
> 
> > That's because you wrote it wrong.  It should be
> >
> >    foo(T t_) : t(std::move(t_)) {}
> 
> That does one copy plus one move for lvalues, while a single copy would 
> have been enough with
> 
> foo(T const& t_) : t(t_) {}

That, however, does a copy for rvalues, too.