#include <iostream>
#include <functional> //Required for std::function.
 
//Not directly related to the problem.
//void myFunc(char seperator)
//{
//    std::cout << "char overload" << std::endl;
//}
 
struct Callback
{
    Callback(bool (&func)(char)): m_func(func)
    {}
 
    bool operator()(char c) { return m_func(c); }
 
    bool (&m_func)(char);
};
 
void myFunc(Callback seperatorFunc)
{
    std::cout << "Callback overload" << std::endl;
}
 
void myFunc(const std::string &separator)
{
    std::cout << "std::string overload" << std::endl;
}
 
bool testCallback(char)
{
    return true;
}
 
int main()
{
    myFunc("String literal");
    myFunc(std::string("std::string"));
    //myFunc('c');
    myFunc(testCallback);
 
    return 0;
}

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