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view lib/ur/option.urs @ 1076:dcf98ae3c48d

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Allow same constructor shorthand for 'view' sig items as for 'table'
author Adam Chlipala <adamc@hcoop.net>
date Tue, 15 Dec 2009 11:11:49 -0500
parents 757dbac0454d
children a99b743a3087
line wrap: on
line source
datatype t = datatype Basis.option

val eq : a ::: Type -> eq a -> eq (t a)
val ord : a ::: Type -> ord a -> ord (t a)

val isNone : a ::: Type -> t a -> bool
val isSome : a ::: Type -> t a -> bool

val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b
val bind : a ::: Type -> b ::: Type -> (a -> option b) -> t a -> t b

val get : a ::: Type -> a -> option a -> a