note
	description: "Structures with a finite item count"
	library: "Free implementation of ELKS library"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	names: finite, storage
	date: "$Date: 2017-03-23 19:18:26 +0000 (Thu, 23 Mar 2017) $"
	revision: "$Revision: 100033 $"

deferred class 
	FINITE [G]

inherit
	BOX [G]

feature -- Measurement

	count: INTEGER_32
			-- Number of items
		deferred
		ensure
			count_non_negative: Result >= 0
		end
	
feature -- Status report

	is_empty: BOOLEAN
			-- Is structure empty?
		do
			Result := count = 0
		end
	
invariant
	empty_definition: is_empty = (count = 0)

note
	copyright: "Copyright (c) 1984-2017, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.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 -- class FINITE

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