Automatic generation produced by ISE Eiffel

Classes
Clusters
Cluster hierarchy
Chart
Relations
Text
Flat
Contracts
Flat contracts
Go to: 
indexing
	description: "Collection, where each element must be unique."
	status: "See notice at end of class"
	names: set
	access: membership
	contents: generic
	date: "$Date: 2001-11-16 20:32:23 +0000 (Fri, 16 Nov 2001) $"
	revision: "$Revision: 51435 $"

deferred class 
	SET [G]

inherit
	COLLECTION [G]
		redefine
			changeable_comparison_criterion
		end

feature -- Measurement

	count: INTEGER is
			-- Number of items
		deferred
		end
	
feature -- Element change

	extend (v: G) is
			-- Ensure that set includes v.
			-- Was declared in SET as synonym of put.
		deferred
		ensure then
			in_set_already: old has (v) implies (count = old count)
			added_to_set: not old has (v) implies (count = old count + 1)
		end

	put (v: G) is
			-- Ensure that set includes v.
			-- Was declared in SET as synonym of extend.
		deferred
		ensure then
			in_set_already: old has (v) implies (count = old count)
			added_to_set: not old has (v) implies (count = old count + 1)
		end
	
feature -- Removal

	prune (v: G) is
			-- Remove v if present.
		deferred
		ensure then
			removed_count_change: old has (v) implies (count = old count - 1)
			not_removed_no_count_change: not old has (v) implies (count = old count)
			item_deleted: not has (v)
		end

	changeable_comparison_criterion: BOOLEAN is
			-- May object_comparison be changed?
			-- (Answer: only if set empty; otherwise insertions might
			-- introduce duplicates, destroying the set property.)
		do
			Result := is_empty
		ensure then
			only_on_empty: Result = is_empty
		end
	
indexing
	library: "[
			EiffelBase: Library of reusable components for Eiffel.
	]"
	status: "[
			Copyright 1986-2001 Interactive Software Engineering (ISE).
			For ISE customers the original versions are an ISE product
			covered by the ISE Eiffel license and support agreements.
	]"
	license: "[
			EiffelBase may now be used by anyone as FREE SOFTWARE to
			develop any product, public-domain or commercial, without
			payment to ISE, under the terms of the ISE Free Eiffel Library
			License (IFELL) at http://eiffel.com/products/base/license.html.
	]"
	source: "[
			Interactive Software Engineering Inc.
			ISE Building
			360 Storke Road, Goleta, CA 93117 USA
			Telephone 805-685-1006, Fax 805-685-6869
			Electronic mail <info@eiffel.com>
			Customer support http://support.eiffel.com
	]"
	info: "[
			For latest info see award-winning pages: http://eiffel.com
	]"

end -- class SET


Classes
Clusters
Cluster hierarchy
Chart
Relations
Text
Flat
Contracts
Flat contracts
Go to: 

-- Generated by ISE Eiffel --
For more details: www.eiffel.com