note
	description: "[
		Data structures whose items may be compared
		according to a total order relation
	]"
	library: "Free implementation of ELKS library"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	names: comparable_struct
	access: min, max
	contents: generic
	date: "$Date: 2012-07-23 21:02:19 +0000 (Mon, 23 Jul 2012) $"
	revision: "$Revision: 91989 $"

deferred class interface
	COMPARABLE_STRUCT [G -> COMPARABLE]

feature -- Measurement

	min: like item
			-- Minimum item
		require
				min_max_available

	max: like item
			-- Maximum item
		require
				min_max_available

	min_max_available: BOOLEAN
			-- Can min and max be computed?
		ensure
				Result implies not is_empty
	
feature -- Inapplicable

	index: INTEGER_32
			-- Index of current position
	
invariant
	empty_constraint: min_max_available implies not is_empty

note
	copyright: "Copyright (c) 1984-2012, 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 COMPARABLE_STRUCT

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