C++ macro with lambda argument using 2+ captured elements generates error

Question

foo(const std::function& functor) {
    ....
}

#define MACRO_EXAMPLE(functor) foo(functor)

int main() {
    int i = 0, j = 0;
    MACRO_EXAMPLE([         


        

Answer 1

Add one more round of parenthesis:

MACRO_EXAMPLE(([i, j](){}));
//            ^          ^

Otherwise the part before , is interpreted as macro's first parameter, and the part after , is interpreted as the macro's second parameter.