This module should be pretty easy to use. Consider the following tiny
example, and look for more functions in rshash.h.

#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include "rshash.h"

int main() {
  rshash_t* hash = rshash_init(NULL, free);

  char* keys[2] = {"foo", "bar"};
  int* values[2] = {0};

  values[0] = (int*)malloc(sizeof(int));
  *values[0] = 101;
  values[1] = (int*)malloc(sizeof(int));
  *values[1] = 102;

  rshash_add(hash, keys[0], strlen(keys[0]), values[0]); // -> true
  rshash_add(hash, keys[1], strlen(keys[1]), values[1]); // -> true

  rshash_has(hash, keys[0], strlen(keys[0])); // -> true

  rshash_get(hash, "baz", strlen("baz")); // -> NULL

  rshash_iterator_t* it = rshash_iterator(hash);
  while (rshash_iterator_next(it)) {
    char* key = (char*)rshash_iterator_key(it);
    int* value = (int*)rshash_iterator_value(it);

    printf("%s: %d\n", key, *value);
  }
  free(it);

  rshash_free(hash);

  return EXIT_SUCCESS;
}