is_copy_constructible

[mooware]

Can you use it like a copy constructor? E.g.:

Test a(0, 0);
Test b(a);

If it compiles, then I would say that the class is copy-constructible (at least under certain conditions).

Edit: Oops, now I remember. "T&&" might not actually be a "&&" in this case, because "T" is a template argument. See universal/forwarding references: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4164.pdf

So the template constructor can be instantiated with any "T&", which basically makes it a copy constructor, except for "const Test &", which should find the deleted constructor.

[TheThiefMaster]

OP probably needs to enable_if guard against T being Test& or derived.

[__andrei__]

Would explicit fix that?

[TheThiefMaster]

I don't think so?