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comparison tests/datatype.ur @ 312:f387d12193ba

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Datatype positivity check
author Adam Chlipala <adamc@hcoop.net>
date Tue, 09 Sep 2008 09:15:00 -0400
parents 71bafe66dbe1
children
comparison
equal deleted inserted replaced
311:9ad92047a499 312:f387d12193ba
9 9
10 datatype list = Nil | Cons of {Head : int, Tail : list} 10 datatype list = Nil | Cons of {Head : int, Tail : list}
11 11
12 val nil = Nil 12 val nil = Nil
13 val l1 = Cons {Head = 0, Tail = nil} 13 val l1 = Cons {Head = 0, Tail = nil}
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15 datatype term = App of term * term | Abs of term -> term
16