Stateモナドの解説 前編

1,976
-1

Published on

Published in: Technology, Education
0 Comments
4 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
1,976
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
53
Comments
0
Likes
4
Embeds 0
No embeds

No notes for slide




























  • Stateモナドの解説 前編

    1. 1. State 2009 5 31 id:hiratara
    2. 2. • • State
    3. 3. • URI Comparable Interface Comparable URI
    4. 4. (1)
    5. 5. Bool length Float fst Integer take MyType zip (Int, Bool) myfunc [Char] id Maybe String ... Int → Int → Int ...
    6. 6. Bool length Float fst Integer take MyType zip (Int, Bool) myfunc [Char] id Maybe String ... Int → Int → Int ...
    7. 7. Bool length Float fst Integer take MyType zip (Int, Bool) myfunc [Char] id Maybe String ... Int → Int → Int ...
    8. 8. id f -> f quot;abcquot; [Char] id head [Char] -> [Char] Char id length take Int id
    9. 9. id f -> f quot;abcquot; [Char] id head [Char] → [Char] Char id length take Int id
    10. 10. (2)
    11. 11. : Maybe [Char] Maybe [Char] Maybe length liftM length Maybe Int Maybe Int
    12. 12. [] [Char] [ [Char] ] [] length liftM length [] Int [ Int ]
    13. 13. [] [Char] [] [Char] [ [Char] ] [] length liftM length [] Int [ Int ]
    14. 14. liftM Maybe [] [Char] [ [Char] ] [] length liftM length [] Int [ Int ]
    15. 15. (3) return
    16. 16. : Maybe return [Char] Maybe [Char] return Int Maybe Int
    17. 17. [] return [Char] [ [Char] ] return Int [ Int ]
    18. 18. return State return [Char] State [Char] return Bool State Bool return MyType State MyType return IO String State (IO String)
    19. 19. (4) (>>=)
    20. 20. Maybe [Char] Maybe [Char] func Int Maybe Int Maybe
    21. 21. (>>=) Maybe [Char] Maybe [Char] (>>=) func (=<<) func Int Maybe Int Maybe
    22. 22. State (>>=) [Char] State [Char] func1 (=<<) func1 (>>=) Int State Int func2 (=<<) func2 MyType State MyType
    23. 23. return IO [Char] IO [Char] length return Int IO Int
    24. 24. IO [Char] IO [Char] return . length length return Int IO Int
    25. 25. (>>=) liftM IO [Char] (>>=) IO [Char] return . length length (=<<) $ return . length return Int IO Int
    26. 26. • • return • (>>=)
    27. 27. • • • State
    28. 28. • Haskell Kleisli triple Monad • Kleisli triple Monad • Kleisli triple liftM ( Monad )
    1. A particular slide catching your eye?

      Clipping is a handy way to collect important slides you want to go back to later.

    ×