Passing function pointer to Cxx

General Usage
6

For anyone that is interested doing this

using Cxx

cxx"""
void evaluatec(void (*f)() ){
    f();
}
"""

function evaluate(f)
    f_void_ptr = @cfunction($f, Cvoid, ()) # void pointer on f. Need to cast it to function pointer
    f_void_ptr2 = f_void_ptr.ptr
    #show(typeof(f_void_ptr))
    icxx"""
    typedef void (*fptr)();
    fptr f_fun_ptr = reinterpret_cast<fptr>($f_void_ptr2);
    evaluatec(f_fun_ptr);
    """
end


f() = println("hi")
evaluate(f)



g() = print("ho")
evaluate(g)

works under 1.0.2