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comparison lib/ur/mem.urs @ 1180:ac3dbbc85c6e

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Standard library moduls Incl and Mem; tweaks to Especialize and Unpoly
author Adam Chlipala <adamc@hcoop.net>
date Sat, 06 Mar 2010 16:15:26 -0500
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1179:c58453683bbb 1180:ac3dbbc85c6e
1 con mem :: K --> Name -> K -> {K} -> Type
2
3 val mem : K --> nm :: Name -> t :: K -> r :: {K} -> [[nm] ~ r] => mem nm t ([nm = t] ++ r)
4 val mp : K --> K2 --> f :: (K -> K2) -> nm ::: Name -> t ::: K -> r ::: {K} -> mem nm t r -> mem nm (f t) (map f r)
5
6 val proj : nm ::: Name -> t ::: Type -> r ::: {Type} -> mem nm t r -> $r -> t
7 val replace : nm ::: Name -> t ::: Type -> r ::: {Type} -> mem nm t r -> $r -> t -> $r
8
9 val fold : K --> tf :: ({K} -> Type) -> r ::: {K}
10 -> (nm :: Name -> v :: K -> r' :: {K} -> [[nm] ~ r']
11 => mem nm v r -> tf r' -> tf ([nm = v] ++ r'))
12 -> tf []
13 -> folder r -> tf r