Implementing a compile-time “static-if” logic for different string types in a container

Question

I\'d like to write a function template that operates on a container of strings, for example a std::vector.

I\'d like to support both CString

Answer 1

You could provide function overloads that do what you need:

size_t getSize(const std::string& str)
{
    return str.size();
}

size_t getSize(const CString& str)
{
    return str.GetLength();
}

template 
void DoSomething(const ContainerOfStrings& strings)
{
    for (const auto & s : strings)
    {
        ...
        auto size = getSize(s);
        ...
    }
}