Passing operator as a parameter

Question

I want to have a function that evaluates 2 bool vars (like a truth table).

For example:

Since

T | F : T 

then

myfunc('t', 'f', ||);  /*defined as: bool myfunc(char lv, char rv, ????)*/ 

should return true;.

How can I pass the third parameter?

(I know is possible to pass it as a char* but then I will have to have another table to compare operator string and then do the operation which is something I would like to avoid)

Is it possible to pass an operator like ^ (XOR) or || (OR) or && (AND), etc to a function/method?

Answer 1

Declare:

template<class Func> bool myfunc(char lv, char rv, Func func); 

Or if you need to link it separately:

bool myfunc(char lv, char rv, std::function<bool(bool,bool)> func); 

Then you can call:

myfunc('t', 'f', std::logical_or<bool>()); 

Answer 2

@ybungalobill posted a C++ correct answer and you should stick to it. If you want to pass the operators, functions will not work, but macros would do the work:

#define MYFUNC(lv, rv, op) ....  // Call it like this MYFUNC('t', 'f', ||); 

Be careful, macros are evil.