id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4820	any swaps inefficiently	jonathandodd@…	nasonov	"Apologies if this isn't a bug - I am quite new to boost, however I checked in the IRC channel and it doesn't seem like this is a total non-starter.

It seems that if you simply call swap, std::swap is called, resulting in an inefficient swapping operation. For example:

Big b1, b2;
any a1=b1, a2=b2;

swap(a1,a2);    //Calls std::swap, invokes three copy constructors

I've attached a demonstration file, which I compiled with gcc.

Seems like can be easily solved with an overloaded std::swap, but I know little about boost, so I'll leave that for the experts :)"	Bugs	closed	To Be Determined	any	Boost 1.44.0	Optimization	invalid