On Monday, May 12, 2014 4:27:37 AM UTC+2, Gabriel Gonzalez wrote:
>
> Earlier today I wrote up a fold for somebody else for retrieving the last
> N elements of a sequence. That's the non-trivial bit:
>
> http://lpaste.net/103997<http://www.google.com/url?q=http%3A%2F%2Flpaste.net%2F103997&sa=D&sntz=1&usg=AFQjCNGn-hu-CTTeuqPcUTfgK2xhH7QjHg>
>
>
I am almost ashamed to ask but I fail to see why the `main` (in the above
lpaste) does not output a thing
while it works as expected with a file
main = withFile "test" ReadMode $ \hIn -> do
ls <- purely fold (lastN 5) $ P.fromHandle hIn
runEffect $ for (each ls) (lift . putStrLn)
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