/**
 * hashtable.h
 *   The hash table type and the useful functions on that table.
 */

struct hashtable {
  int size;
  int elements;
  struct element **contents;
};

/**
 * PROCEDURE:
 *   assign
 * Parameters:
 *   table, a hash table
 *   key, a string
 *   value, a string
 * Purpose:
 *   table[key] = value
 * Produces:
 *   success, a boolean (integer)
 */
int assign (struct hashtable *table, char *key, char *value);

/**
 * Procedure:
 *   get
 * Parameters:
 *   table, a hash table
 *   key, a string
 * Purpose:
 *   Get the value associated with key
 * Produces:
 *   value, a string
 * Problems:
 *   If the key is not in the table, return NULL.
 */
char *get (struct hashtable *table, char *key);

/**
 * Procedure:
 *   new_hashtable
 * Parameters:
 *   size, a positive int
 * Purpose:
 *   Create a new hash table of the specified size.
 */
struct hashtable *new_hashtable (int size);