arg_hashtable_search() function

the hash table to search

the key to search for - does not claim ownership

Remove the specified key from the hash table.

Return the number of keys in the hash table.

Free the hash table and the memory allocated for each key-value pair.

This function will cause the table to expand if the insertion would take the ratio of entries to table size over the maximum load factor. This function does not check for repeated insertions with a duplicate key. The value returned when using a duplicate key is undefined -- when the hash table changes size, the order of retrieval of duplicate key entries is reversed. If in doubt, remove before insert.

Search and overwrite the supplied iterator, to point to the entry matching the supplied key.

Change the value associated with the key. function to change the value associated with a key, where there already exists a value bound to the key in the hash table. Source due to Holger Schemel. @name hashtable_change