C++0x rvalue references and temporaries

Question

(I asked a variation of this question on comp.std.c++ but didn\'t get an answer.)

Why does the call to f(arg) in this code call the const ref overload of

Answer 1

Take a look at this:

http://blogs.msdn.com/vcblog/archive/2009/02/03/rvalue-references-c-0x-features-in-vc10-part-2.aspx

rvalue references: overload resolution

It looks like your case is: "Lvalues strongly prefer binding to lvalue references".