Calling a function overloaded in several namespaces from inside one namespace

Question

I have the following code snippet:

void foo(double a) {}

namespace bar_space
{
  struct Bar {};

  void foo(Bar a) {}
}

foo(double) is a g

Answer 1

However, in your sample code you could use something like that

namespace bar_space 
{
    using ::foo;
    void baz()
    {
       Bar bar;
       foo(5.0);
       foo(bar);
    }
}