Le 18/07/12 23:49, Steven Watanabe a écrit :
AMDG
On 07/18/2012 02:15 PM, Vicente J. Botet Escriba wrote:
Hi,
The References section constains this example:
int i, j; any<typeid_<>, _self&> x(i), y(j); x = y; // error
The following basic c++ code
int i=1, j=0; int& x(i); int& y(j); x = y; // [1]
works and the expected value of x after [1] is 0.
Which concept requirements should I add to make the following work? assignable?
Yes. assignable<> should work.
int i, j; any<mpl::vector<typeid_<>, ...>, _self&> x(i), y(j); x = y; // no error
Does it mean that the sentence in section "Using References" " References are not assignable. Just like a built-in C++ reference, once you've initialized it you can't change it to point to something else" could be subject to confusion. What do you exactly wanted to show there? Best, Vicente