[Haskell-beginners] Passing a file containing a list as an input

[Olivier Revollat]

See also http://book.realworldhaskell.org/read/io.html

Example (take stdin and stdout the uppercased)

import Data.Char(toUpper)
main = interact (map toUpper)



Le ven. 6 juil. 2018 à 09:33, Olivier Revollat <revollat at gmail.com> a
écrit :

> Hi,
> Maybe you should try "interact"
>
> main = io (map processIt)
> io f = interact (unlines . f . lines)
>
>
>
> Le jeu. 5 juil. 2018 à 22:21, Awsaf Rahman <awsafrahman1704 at gmail.com> a
> écrit :
>
>> Hello everyone!
>>
>> I am really struggling with Haskell I/O.
>>
>> I have written a mergesort program and as an input to that program I want
>> to use a file containing a list of 1000 integers. Let's say the contents of
>> the file look like this
>>
>> [120, 400, 500 , 20, 100 ..]
>>
>> How can I achieve that? I am trying to write a main function that takes
>> the file as an input and passes the list to my mergesort function..
>>
>> Regards
>> Awsaf Rahman
>> _______________________________________________
>> Beginners mailing list
>> Beginners at haskell.org
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>
>
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