Mercurial > hg > Members > atton > delta_monad

annotate delta.hs @ 43:90b171e3a73e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rename to Delta from Similar
author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Sat, 01 Nov 2014 15:19:04 +0900
parents similar.hs@b4d3960af901
children 6e270dfe2bb9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
17
279ebcf670c4 Define Similar as Applicative
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 16
diff changeset
1 import Control.Applicative
18
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
2 import Data.Numbers.Primes -- $ cabal install primes
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
3
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
4 data Delta a = Delta [String] a [String] a deriving (Show)
17
279ebcf670c4 Define Similar as Applicative
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 16
diff changeset
5
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
6 value :: (Delta a) -> a
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
7 value (Delta _ x _ _) = x
21
af8754322ed4 Define Similar sample
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 20
diff changeset
8
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
9 similar :: (Delta a) -> a
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
10 similar (Delta _ _ _ y) = y
14
116131b196bb Define fmap and mu
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 13
diff changeset
11
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
12 instance (Eq a) => Eq (Delta a) where
19
003b6e58d815 Define Similar as Monad by mu
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 18
diff changeset
13 s == ss = (value s) == (value ss)
18
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
14
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
15 instance Functor Delta where
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
16 fmap f (Delta xs x ys y) = Delta xs (f x) ys (f y)
18
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
17
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
18 instance Applicative Delta where
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
19 pure f = Delta [] f [] f
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
20 (Delta lf f lg g) <*> (Delta lx x ly y) = Delta (lf ++ lx) (f x) (lg ++ ly) (g y)
20
d4aa70d94352 Define Similar as Applicative
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 19
diff changeset
21
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
22 mu :: Delta (Delta a) -> Delta a
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
23 mu (Delta lx (Delta llx x _ _) ly (Delta _ _ lly y)) = Delta (lx ++ llx) x (ly ++ lly) y
18
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
24
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
25 instance Monad Delta where
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
26 return x = Delta [] x [] x
22
f0400c4c953f Imporve Similar definition. delete "Single" constructor
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 21
diff changeset
27 s >>= f = mu $ fmap f s
18
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
28
c77397d0677f Try define Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 17
diff changeset
29
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
30 returnS :: (Show s) => s -> Delta s
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
31 returnS x = Delta [(show x)] x [(show x)] x
0
7a82a5e50499 Initial commit. define to Functor for Similer
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
diff changeset
32
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
33 returnSS :: (Show s) => s -> s -> Delta s
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
34 returnSS x y = Delta [(show x)] x [(show y)] y
23
b4d3960af901 Define similar constructor for different element
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 22
diff changeset
35
16
4b315cf0edb9 Improve mu definition
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 15
diff changeset
36 -- samples
3
3c5fbce357af Define >>= for Similer
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 2
diff changeset
37
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
38 generator :: Int -> Delta [Int]
21
af8754322ed4 Define Similar sample
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 20
diff changeset
39 generator x = let intList = [1..x] in
22
f0400c4c953f Imporve Similar definition. delete "Single" constructor
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 21
diff changeset
40 returnS intList
6
5e367a167382 Define samples
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 5
diff changeset
41
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
42 primeFilter :: [Int] -> Delta [Int]
21
af8754322ed4 Define Similar sample
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 20
diff changeset
43 primeFilter xs = let primeList = filter isPrime xs
23
b4d3960af901 Define similar constructor for different element
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 22
diff changeset
44 refactorList = filter even xs in
b4d3960af901 Define similar constructor for different element
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 22
diff changeset
45 returnSS primeList refactorList
11
e8a5df54480e Define sample for Monad style
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 10
diff changeset
46
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
47 count :: [Int] -> Delta Int
21
af8754322ed4 Define Similar sample
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 20
diff changeset
48 count xs = let primeCount = length xs in
22
f0400c4c953f Imporve Similar definition. delete "Single" constructor
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 21
diff changeset
49 returnS primeCount
15
c599d2236d19 Similar as Monad
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 14
diff changeset
50
43
90b171e3a73e Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 23
diff changeset
51 primeCount :: Int -> Delta Int
21
af8754322ed4 Define Similar sample
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents: 20
diff changeset
52 primeCount x = generator x >>= primeFilter >>= count