Le 02/06/12 18:24, Marc Glisse a écrit :
On Fri, 1 Jun 2012, John Maddock wrote:
* the example about using 0 vs 11 temporaries doesn't mention what happens to the boost package if we disable expression template. Does it use a single temporary (using rvalue-references) or plenty?
Plenty, haven't measured how many, but I'd expect it to be the same as for mpclass. I guess I should cover that.
I think you really want to investigate using rvalue references, in that case. Which reminds me: there is some overlap with boost/operators.hpp (I heard someone was rewriting it?), so the rvalue reference techniques could be the same, and the documentation could say something about the relation between the 2.
rvalue references and move semantics are already supported.
You have a move constructor,
I've missed it. Please, could you point me where it is defined and documented?
but I haven't seen anything like:
number operator+(number&& a, number const&b){return move(a+=b);}
Best, Vicente