note

	description:
		"Containers whose items are accessible through keys";

	status: "See notice at end of class";
	names: table, access;
	access: key, membership;
	contents: generic;
	date: "$Date$";
	revision: "$Revision$"

deferred class TABLE [G, H] inherit

	BAG [G]
		rename
			put as bag_put
		end;

feature -- Access

	item alias "[]", at alias "@" (k: H): G assign put
			-- Entry of key `k'.
		require
			valid_key: valid_key (k)
		deferred
		end;

feature -- Status report

	valid_key (k: H): BOOLEAN
			-- Is `k' a valid key?
		deferred
		end;

feature -- Element change

	put (v: G; k: H)
			-- Associate value `v' with key `k'.
		require
			valid_key: valid_key (k)
		deferred
		end;

feature {NONE} -- Inapplicable

	bag_put (v: G)
		do
		end

end -- class TABLE


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