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Today's Topics:
1. A Question about withFile (Bin Shi)
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Message: 1
Date: Wed, 25 Jul 2012 17:40:01 +0800
From: Bin Shi <[email protected]>
Subject: [Haskell-beginners] A Question about withFile
To: [email protected]
Message-ID:
<cahpucook2739pdphue7dfkupuu_7yygjqftrknjg7iremhk...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hello,
I wrote a simple test program as
main = do
withFile "a.txt" ReadMode (\h -> do
c <- hGetContents h
putStrLn c)
then I got my expected results: I'm a.txt
but if I changed to
main = do
c <- withFile "a.txt" ReadMode hGetContents
putStrLn c
I got just a empty line.
Where am I wrong?
Thanks.
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End of Beginners Digest, Vol 49, Issue 27
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