Is const_cast safe?

Question

I can\'t find much information on const_cast. The only info I could find (on Stack Overflow) is:

The const_cast<>() i

Answer 1

What Adam says. Another example where const_cast can be helpful:

struct sample {
    T& getT() { 
        return const_cast(static_cast(this)->getT()); 
    }

    const T& getT() const { 
       /* possibly much code here */
       return t; 
    }

    T t;
};

We first add const to the type this points to, then we call the const version of getT, and then we remove const from the return type, which is valid since t must be non-const (otherwise, the non-const version of getT couldn't have been called). This can be very useful if you got a large function body and you want to avoid redundant code.