c++ - How to determine, what type do I have on input -

i've got iterator through undefined type:

 (typename type::const_iterator haystackiterator = hayheap.begin(); haystackiterator != hayheap.end(); ++haystackiterator) {            //some inner logic } 

and nice, know type *haystackiterator able modify inner logic pursuant information... there simple function make this?

if (*haystackiterator.isinstanceof(vector<string>){ //do } else if (*haystackiterator.isinstanceof(string){ //do else } 

i can use these includes:

#include <cctype> #include <iostream> #include <iomanip> #include <set> #include <list> #include <map> #include <vector> #include <queue> #include <string> 

put inner logic in function, , overload function:

void innerlogic(vector<string> const& vec) {     //do }  void innerlogic(string const& str) {     //do else }  void loop() {     (typename type::const_iterator haystackiterator = hayheap.begin();          haystackiterator != hayheap.end();          ++haystackiterator)     {         innerlogic(*haystackiterator);     } }