find

Description:

[ Version ( since = "2.4" ) ]
public unowned V find (HRFunc<K,V> predicate)

Calls the given function for key/value pairs in the GenericSet until predicate returns true.

The function is passed the key and value of each pair, and the given user_data parameter. The hash table may not be modified while iterating over it (you can't add/remove items).

Note, that hash tables are really only optimized for forward lookups, i.e. @get. So code that frequently issues find or for_each (e.g. in the order of once per every entry in a hash table) should probably be reworked to use additional or different data structures for reverse lookups (keep in mind that an O(n) find/foreach operation issued for all n values in a hash table ends up needing O(n*n) operations).

Parameters:

predicate	function to test the key/value pairs for a certain property
hash_table	a GenericSet
user_data	user data to pass to the function

Returns:

The value of the first key/value pair is returned, for which predicate evaluates to true . If no pair with the requested property is found, null is returned.