I'm reworking external sort to meet the needs of my app and I'm running into some trouble that I was hoping to get some advice on. I'm asking a lot of questions here so don't feel obligated to answer them all if you have input on one point: The code is here: http://tinyurl.com/extsort 1) The sort gives the correct result, but when I tried to sort very large files (~4 Gb) I got this message: tssql: /var/folders/Tl/TlS1rTCyFpWU9s-IsNFkdE+++TI/-Tmp-/sort4106.txt: openBinaryFile: resource exhausted (Too many open files) I tried to be careful about limiting the number of open file handles but I must have done something wrong. Do you see where I'm leaking file handles? 2) I'm guessing there's a smarter way to do unwrapMonads? 3) I'd like to create a function like BS.hGetContents which lazily reads the ByteString but in addition to closing the file after the last byte is read I want it to delete the file that I'm reading from. Like hGetContentsThenDelete. It seems like http://hackage.haskell.org/package/lazyio but it isn't clear to me how I would do this I cant do
LazyIO.run $ do str <- BS.hGetContents file removeFile file return str
can I? I assume that would close the file too soon 4) Is there any other wacky stuff in my code that I should change? I told you it was a lot :-) Thanks! -Keith -- keithsheppard.name