Hi Henning, I tend to use openFile, hGetContents, hClose - your initial readFile like call should be openFile/hGetContents, which gives you a lazy stream, and on a parse error call hClose. Thanks Neil
-----Original Message----- From: haskell-cafe-bounces@haskell.org [mailto:haskell-cafe-bounces@haskell.org] On Behalf Of Henning Thielemann Sent: 17 September 2008 12:31 pm To: Haskell Cafe Subject: [Haskell-cafe] readFile and closing a file
Say I acquire a text by readFile, feed it to a lazy parser and the parser stops reading because of a parse error. After the parser error I won't fetch more characters from the text file, but readFile does not get to know that and cannot close the file. Actually, when encountering a parser error I could read the remaining characters from the file in order to let readFile close the file eventually, but this sounds rather inefficient. So, what is the right way to go, or do I have to stay away from readFile (and maybe unsafeInterleaveIO at all)? _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
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