Eitan Goldshtrom wrote:
f p = putStrLn $ (show (Main.id p)) ++ - message received
Brandon S Allbery KF8NH wrote:
f p = putStrLn $ (show $ Main.id p) ++ = message received
wren ng thornton w...@freegeek.org wrote:
f p = putStrLn $ show (Main.id p) ++ - message received
f p = putStrLn
On 10 May 2011, at 08:30, Yitzchak Gale wrote:
If I were to describe to someone in words what this
function does, I would say something like: Apply Main.id,
turn it into a string, tack a message onto the end, and
print it. So why not write it that way in Haskell?
Why not indeed ?
(--) =
On 10 May 2011 09:47, Andrew Butterfield andrew.butterfi...@cs.tcd.ie wrote:
Why not indeed ?
(--) = flip (.)
f = Main.id -- show -- (++ = message received) -- putStrLn
-- () :: Category cat = cat a b - cat b c - cat a c
import Control.Category ( () )
f = Main.id show (++ - message
Andrew Butterfield wrote:
Why not indeed ?
Roel van Dijk wrote:
import Control.Category ( () )
f = Main.id show (++ - message received) putStrLn
Indeed, I agree. I sometimes do that, too, when I want to
emphasize the idea of applying tools one after the other.
But most often I just use
Andrew Butterfield wrote:
Why not indeed ?
Roel van Dijk wrote:
import Control.Category ( () )
f = Main.id show (++ - message received) putStrLn
Indeed, I agree. I sometimes do that, too, when I want to
emphasize the idea of applying tools one after the other.
But most often I just use
On 10/05/2011 08:30 AM, Yitzchak Gale wrote:
I think the clearest way to write it is:
f = putStrLn . (++ - message received) . show . Main.id
You're serious??
If I were to describe to someone in words what this
function does, I would say something like: Apply Main.id,
turn it into a
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 5/7/11 15:10 , Eitan Goldshtrom wrote:
I get the error Couldn't match expected type `[Char]' with actual type `a0
- c0'. The only way it seems to work is
f p = putStrLn $ (show (Main.id p)) ++ - message received
Interestingly enough, you have
On Sat, May 7, 2011 at 2:10 PM, Eitan Goldshtrom thesource...@gmail.com wrote:
Hi. I am kind of tired of all of the parentheses I have to put in places and
I'm trying to figure out what is the correct way to write code such that I
can leave out parentheses. For example, I have the following:
I know about the $ symbol, that's why it's in there in the respective
places. I see that I can use it to fix my problem, but I was trying to
figure out function composition really. I guess that's just not the
place for it. I'll check out Control.Applicative. Also thanks for the
clarification
As another suggestion, you may try HLint [1]. It usually tells you if
you put unnecessary parenthesis. Among other nice suggestions.
[1] http://community.haskell.org/~ndm/hlint/ (or cabal-install hlint)
Cheers, =)
--
Felipe.
___
Haskell-Cafe
On 5/7/11 4:29 PM, Eitan Goldshtrom wrote:
I know about the $ symbol, that's why it's in there in the respective
places. I see that I can use it to fix my problem, but I was trying to
figure out function composition really. I guess that's just not the
place for it. I'll check out
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