Mercurial > hg > Members > atton > delta_monad
comparison similer.hs @ 0:7a82a5e50499
Initial commit. define to Functor for Similer
| author | Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 31 Aug 2014 16:48:45 +0900 |
| parents | |
| children | 878d1e271709 |
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| -1:000000000000 | 0:7a82a5e50499 |
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| 1 data Similer a f b = Similer a (a -> b) b | |
| 2 | |
| 3 instance Functor (Similer a f) where | |
| 4 fmap g (Similer a f b) = Similer a (g . f) $ g b | |
| 5 | |
| 6 eta :: a -> Similer a (a -> a) a | |
| 7 eta a = Similer a id a | |
| 8 | |
| 9 --mu :: (Eq a, Eq b, Eq c) => Similer a (a -> b) (Similer b (b -> c) c) -> Similer b (b -> c) c | |
| 10 --mu (Similer a f (Similer b g c)) = if ((f a) == b) then Similer b g c else undefined | |
| 11 --mu (Similer a f (Similer b g c)) = if ((f a) == b) then Similer b g c else undefined |