Insert Pseudonym Here wrote in
news:Xns94DDEDA7A9178iphiphfakeaddrcom@68.12.19.6 in comp.lang.c++:
> In FAQ 15.03, it is stated, "Note that a using directive does not
> declare any variables; it merely makes names available." No similar
> mention is made for using-declarations. Based on the name alone, I
> assume using- declarations DO declare variables. Is this assumption
> correct?
Yes they declare names, but names that have been declared elseware.
> If so, what's the practical difference between one of them
> declaring a variable, and the other not? For that matter, what the
> theoretical difference?
namespace A
{
int a;
};
namespace B
{
int a;
using namespace A; /* doesn't declare anything */
using A::a; /* whoops redeclares B::a */
};
Rob.
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