================================================================ Logtalk - Open source object-oriented logic programming language Release 2.30.1 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. ================================================================ To load all entities in this group load the types_loader.lgt utility file: | ?- logtalk_load(types_loader). These objects implement predicates over common Prolog terms and structures such as lists, difference lists, binary trees, queues, dictionaries, and sets.