Automatic generation produced by ISE Eiffel
indexing description: "References to objects containing a boolean value" status: "See notice at end of class" date: "$Date: 2001-11-16 20:32:23 +0000 (Fri, 16 Nov 2001) $" revision: "$Revision: 51435 $" class interface BOOLEAN_REF feature -- Access hash_code: INTEGER -- Hash code value ensure -- from HASHABLE good_hash_value: Result >= 0 item: BOOLEAN -- Boolean value feature -- Status report is_hashable: BOOLEAN -- May current object be hashed? -- (True if it is not its type's default.) ensure -- from HASHABLE ok_if_not_default: Result implies (Current /= default) feature -- Element change set_item (b: BOOLEAN) -- Make b the item value. feature -- Conversion to_integer: INTEGER -- 1 if True -- 0 if False ensure zero_or_one: Result = 0 or Result = 1 item_implies_one: item implies Result = 1 feature -- Basic operations infix "and" (other: like Current): BOOLEAN -- Boolean conjunction with other require other_exists: other /= void ensure de_morgan: Result = not (not Current or not other) commutative: Result = (other and Current) consistent_with_semi_strict: Result implies (Current and then other) infix "and then" (other: like Current): BOOLEAN -- Boolean semi-strict conjunction with other require other_exists: other /= void ensure de_morgan: Result = not (not Current or else not other) infix "implies" (other: like Current): BOOLEAN -- Boolean implication of other -- (semi-strict) require other_exists: other /= void ensure definition: Result = (not Current or else other) prefix "not": like Current -- Negation infix "or" (other: like Current): BOOLEAN -- Boolean disjunction with other require other_exists: other /= void ensure de_morgan: Result = not (not Current and not other) commutative: Result = (other or Current) consistent_with_semi_strict: Result implies (Current or else other) infix "or else" (other: like Current): BOOLEAN -- Boolean semi-strict disjunction with other require other_exists: other /= void ensure de_morgan: Result = not (not Current and then not other) infix "xor" (other: like Current): BOOLEAN -- Boolean exclusive or with other require other_exists: other /= void ensure definition: Result = ((Current or other) and not (Current and other)) feature -- Output out: STRING -- Printable representation of boolean invariant involutive_negation: is_equal (not (not Current)) non_contradiction: not (Current and (not Current)) completeness: Current or else (not Current) -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) 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 BOOLEAN_REF -- Generated by ISE Eiffel --
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