Re: Is using a braced-list as a function parameter only for std:
: initializer_list?
On 2013-09-30 04:56, Daryle Walker wrote:
Code like:
template < unsigned N >
class MyClass
{
public:
//...
template < typename ...Args >
bool MyFunc( Args &&...args );
bool MyFunc( std::array<unsigned, N> &a );
Take a second look at your argument type: This is an lvalue reference to
non-const std::array<>. How would you expect to bind a temporary to an
lvalue reference to non-const T?
The two "MyFunc" methods call the hidden "MyFuncImpl" to do their
work. I can make calls like "MyFunc(a, b, c)" just fine. But when I
try "MyFunc({d, e, f})" to trigger the std::array overload, I get
complaints on no candidate being found; that initializer-list (the
internal compiler concept, not necessarily std::initializer_list)
couldn't convert to anything appropriate.
Understandable. Fix your function argument type to "const
std::array<unsigned, N>&" and it should work.
HTH & Greetings from Bremen
Daniel Kr?gler
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