doc-src/Tutorial/Ifexpr/value
author nipkow
Thu, 12 Nov 1998 16:45:40 +0100
changeset 5851 15ce4c1c8313
parent 5377 efb799c5ed3c
permissions -rw-r--r--
New section on advanced datatypes.
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consts value :: boolex => (nat => bool) => bool
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primrec
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"value (Const b) env = b"
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"value (Var x)   env = env x"
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"value (Neg b)   env = (~ value b env)"
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"value (And b c) env = (value b env & value c env)"