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Valid Haskell Code

Name: Anonymous 2012-01-14 23:10

http://tuukka.iki.fi/tmp/haskell-2009-04-23.html

(,) <$> [1..5] <*> [11..15]
[(1,11),(1,12),(1,13),(1,14),(1,15),(2,11),(2,12),(2,13),(2,14),(2,15),(3,1...

const ((((((const . (const .)) .) .) .) .) . flip flip id . ((ap . (flip .) . ((flip .) .)) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . join . (flip .) . ((flip .) .) . (((flip .) .) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . flip flip id . (flip .) . ((ap .) .) . (((flip .) .) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . ((((flip .) .) .) .) . (flip .) . ((flip .) .) . (((flip .) .) .) . flip (flip . (flip .) . ((flip .) .) . flip (flip . (flip .))))

Name: Anonymous 2012-01-14 23:14


Lisp             | Haskell
-----------------|--------------------------------------------------------------
Prefix notation. | (,) <$> [1..5] <*> [11..15]
                 | flip flip snd . (ap .) . flip flip fst . ((.) .) . flip .
                 | (((.) . (,)) .) (`ap` snd) . (. fst) . (flip =<< (((.) .
                 | (,)) .)) (`ap` snd) . (. fst) . flip

Name: Anonymous 2012-01-14 23:16

I don't see the problem with the first.

Name: Anonymous 2012-01-14 23:25

>>3
you're blind

Name: Anonymous 2012-01-14 23:41

all i see are tits ( . )( . )

Name: Anonymous 2012-01-14 23:43

>>5
That's ass. You're gay.

Name: Anonymous 2012-01-14 23:49

7/10

Name: Anonymous 2012-01-15 5:17

>>4
Learn you're Applicative.

Name: Anonymous 2012-01-15 7:12

>>8
I'm Applicative? fmap fmap fmap $ (.).(.)!

Name: Anonymous 2012-01-15 9:20

% pointfree 'const ((((((const . (const .)) .) .) .) .) . flip flip id . ((ap . (flip .) . ((flip .) .)) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . join . (flip .) . ((flip .) .) . (((flip .) .) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . flip flip id . (flip .) . ((ap .) .) . (((flip .) .) .) . ((((flip .) .) .) .) . (((((flip .) .) .) .) .) . ((((flip .) .) .) .) . (flip .) . ((flip .) .) . (((flip .) .) .) . flip (flip . (flip .) . ((flip .) .) . flip (flip . (flip .))))'
const ((((((const . (const .)) .) .) .) .) . flip flip id . (liftM2 (flip . ((flip . ((flip . (flip .)) .)) .)) .) . join . ((flip . ((flip . ((flip . ((flip . (flip .)) .)) .)) .)) .) . flip flip id . ((flip . (liftM2 (flip . ((flip . (flip .) . flip) .)) .) . flip . ((flip . (flip .)) .)) .) . flip (flip . ((flip . (flip .)) .) . flip (flip . (flip .))))


Much clearer.

Name: Anonymous 2012-01-16 1:15

Haskell is not 'a little different,' and will not 'take a little time.' It is very different and you cannot simply pick it up.

Name: Anonymous 2012-01-16 1:17

"learning Haskell hurt a lot, at least for me. I needed breaks, and my brain hurt while I was trying to understand." -- Haskell Tutorial

Name: Anonymous 2012-01-16 1:46

>>1
What, nobody checked?

<interactive>:1:479:
    Occurs check: cannot construct the infinite type:
      c1 = a0 -> a2 -> a4 -> (a3 -> a5 -> a1 -> c1) -> a1 -> a2 -> c0
    Expected type: (a5 -> a1 -> c1)
                   -> a1
                   -> a5
                   -> a0
                   -> a2
                   -> a4
                   -> (a3 -> a5 -> a1 -> c1)
                   -> a1
                   -> a2
                   -> c0
      Actual type: (a5 -> a1 -> c1) -> a1 -> a5 -> c1
    In the first argument of `(.)', namely `flip'
    In the second argument of `(.)', namely `(flip .)'

Name: Anonymous 2012-01-16 17:54

>>13

well, at least it's better than a C++ template error

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