Scope resolution
Any name in a namespace can be explicitly
specified using the
scope
resolution operator in the same way that you can refer to the names within a
class:
//: C10:ScopeResolution.cpp
namespace X {
class Y {
static int i;
public:
void f();
};
class Z;
void func();
}
int X::Y::i = 9;
class X::Z {
int u, v, w;
public:
Z(int i);
int g();
};
X::Z::Z(int i) { u = v = w = i; }
int X::Z::g() { return u = v = w = 0; }
void X::func() {
X::Z a(1);
a.g();
}
int main(){} ///:~
Notice that the definition X::Y::i
could just as easily be referring to a data member of a class Y nested in
a class X instead of a namespace X.
So far, namespaces look very much like
classes.
