note description: "Partial order comparators" legal: "See notice at end of class." status: "See notice at end of class." date: "$Date$" revision: "$Revision$" deferred class PART_COMPARATOR [G] feature -- Status report less_than (u, v: G): BOOLEAN -- Is `u' considered less than `v'? require u_not_void: u /= Void v_not_void: v /= Void deferred ensure asymmetric: Result implies not less_than (v, u) end note copyright: "[ Copyright (c) 1984-2009, Eiffel Software and others Copyright (c) 2000, Eric Bezault and others ]" license: "[ Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt) MIT License (see http://www.eiffel.com/licensing/mit.txt) ]" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end