[Haskell-beginners] A first try
d at vidplace.com
Mon Jun 27 19:47:13 CEST 2011
On Jun 27, 2011, at 1:45 PM, Yitzchak Gale wrote:
> David Place wrote:
>>>> Suppose the file is only partially demanded as in the case I quoted earlier.
>>>> print10 =
>>>> contents <- withFile "/usr/share/dict/words" ReadMode (\h -> hGetContents h)
>>>> print $ take 10 contents
>>>> The file would never be closed.
> I wrote:
>>> I tried it - it does close the file.
>> II'm not sure what you mean. Did you create a new version of withFile that behaves
>> as Heinrich suggested? If so, please post its definition.
> I just loaded Heinrich's withFile' in GHCi and ran it:
> *WithFile> withFile' "/usr/share/dict/words" (print . take 10 . words)
Thanks. I understand now.
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