c++ template specialization - linker error multiple definitions

Question

My third question here today ;-), but I am really new to c++ template programming and operator overloading.

I am trying the following:

terminallog.hh

<         


        

Answer 1

This function

Terminallog &Terminallog::operator<<(const char v[]) {
    std::cout << std::endl;
    this->indent();
    std::cout << v;
    return *this;
}

is not a template, but a regular member function. If this .h file is included in several .cpp filtes, it will cause the multiple definition error you're seeing. If you declare it inline, the compiler will allow the multiple definitions and your error should be fixed.

inline
Terminallog &Terminallog::operator<<(const char v[]) {