An Example Of Namespace Clashes

[DanM]

Thanks to @DanM for this simple example of code that could cause an ambiguous function call…

namespace Triangle
{
    int area(int h, int w)
    {
        return h * w / 2;
    }
}
int area(int h, int w)
{ 
    return h * w;
}

using namespace Triangle;
int main()
{
    int a = area(4,2) //ambiguous call Triangle::area or ::area?
}

This could be even worse if the Triangle namespace were included in a header file we aren’t aware of.

[OtenMoten]

ambiguous

One more fact for using

• “xyz::command”

instead of

• “using namespace xyz;”