#ifndef TYPES_H_
#define TYPES_H_ 1
// Oldham, Jeffrey D.
// 2000 Jan 25
// CS1321

// CS1321 Homework 3: Type Definitions

#include <string>
#include <utility>		// has pair
#include <vector>
#include <hash_map>


// Represent each document as a name and a vector of doubles.
typedef std::pair<std::string, std::vector<double> > DocVec;
// Given a DocVec variable dv,
//   to obtain the name, use "dv.first".  This has type "string".
//   to obtain the vector, use "dv.second".  This has type "vector<double>".

// Each document's score is stored as its name and its score.
typedef std::pair<std::string, double> DocScore;
// Given a DocScore variable ds,
//   to obtain the name, use "ds.first".  This has type "string".
//   to obtain the score, use "ds.second".  This has type "double".

// My code needs a mapping from document words to positions within a 
// vector.
typedef std::hash_map<std::string, std::vector<double>::size_type> KeywordMapping;

// our hash function
// Caveat reader!
__STL_TEMPLATE_NULL struct hash<string> {
  size_t operator()(string __s) const {
    return __stl_hash_string(__s.c_str());
  }
};

#endif // TYPES_H_