Method insert

sql/sql_hset.h:57–65

Insert a single value into a hash. Does not tell whether the value was inserted -- if an identical value existed, it is not replaced. @retval TRUE Out of memory. @retval FALSE OK. The value either was inserted or existed in the hash. */

                  in the hash.
  */
  bool insert(T *value)
  {
    my_hash_init_opt(&m_hash, &my_charset_bin, START_SIZE, 0, 0, K, 0, MYF(0));
    size_t key_len;
    const uchar *key= K(reinterpret_cast<uchar*>(value), &key_len, FALSE);
    if (my_hash_search(&m_hash, key, key_len) == NULL)
      return my_hash_insert(&m_hash, reinterpret_cast<uchar *>(value));
    return FALSE;
  }
  /** Is this hash set empty? */
  bool is_empty() const { return m_hash.records == 0; }
  /** Returns the number of unique elements. */