Calls the given function for each of the keys in the #GCache.
NOTE func is passed three parameters, the value and key of a cache
entry and the user_data. The order of value and key is different
from the order in which glib.hash_table.HashTable.foreach_ passes key-value
pairs to its callback function !
Calls the given function for each of the keys in the #GCache.
NOTE func is passed three parameters, the value and key of a cache entry and the user_data. The order of value and key is different from the order in which glib.hash_table.HashTable.foreach_ passes key-value pairs to its callback function !