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namespace 'namespace' does not have a member 'member' - Did you mean 'member'?
The compiler was not able to find an identifier in the specified namespace.
The following sample generates C2251:
// C2251.cpp
// compile with: /c
namespace A {
namespace B {
void f1();
}
using namespace B;
}
void A::f1() {} // C2251
void A::B::f1() {} // OK
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