Mercurial > urweb
annotate lib/ur/option.urs @ 902:4b9f1de2c647
dlist add and delete both working in Iceape and Konqueror
author | Adam Chlipala <adamc@hcoop.net> |
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date | Thu, 06 Aug 2009 14:39:03 -0400 |
parents | 0d30e6338c65 |
children | da3ec6014d2f |
rev | line source |
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adamc@841 | 1 datatype t = datatype Basis.option |
adamc@841 | 2 |
adamc@846 | 3 val eq : a ::: Type -> eq a -> eq (t a) |
adamc@846 | 4 |
adamc@841 | 5 val isSome : a ::: Type -> t a -> bool |
adamc@844 | 6 |
adamc@844 | 7 val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b |
adamc@846 | 8 val bind : a ::: Type -> b ::: Type -> (a -> option b) -> t a -> t b |