C++ - calling a method from a class template -

i'm having problem class template in c++. i'm making hash table.

i'm using functor class template specify hash function each instance of table.

ie: 1 table has integers keys, strings values. have strings keys , integers values, etc...

class hashstring {     public:        unsigned long operator()(std::string& key, const unsigned int tablesize)        {            // .....        }  };  template<typename keytype, typename valuetype, class hashfunctor> class hashtable {     public:         // ....      private:          hashfunctor myhash;  }; 

and let's want call method called "myhash" hash key, @ first call doing:

myhash(key, table.size()) 

but gcc doesn't find function overload hashfuntor(string, unsigned int) example.

could tell me how call myhash? (note: not change structure of functors)

edit: error message actual solution

  instantiated ‘void tp3::table<typeclef, typedonnee, fonchachage>::insert(const typeclef&, const typedonnee&) [with typeclef = int, typedonnee = std::basic_string<char, std::char_traits<char>, std::allocator<char> >, fonchachage = tp3::hachestring]’  no match call ‘(tp3::hachestring) (tp3::table<int, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, tp3::hachestring>::hashentry&)’ 

edit: everywhere says hachestring in fact hashstring (i've translated code paste here).

operator() in hashstring private , not const-correct. should const member function taking const std::string& first parameter. second parameter not need const.

you seem calling hashentry second parameter. hashentry? takes unsigned int!

that might solve of problems.

i assume hachestring / hashstring difference typo.