On 11 Jan 2008, at 2:24 PM, Andre Nathan wrote:
processEntry :: DirStream -> IO () processEntry ds = do entry <- readDirStream ds if entry =~ "^[0-9]+$" then do putStrLn entry processEntry ds else if entry == "" then return () else processEntry dsbar :: IO () bar = do ds <- openDirStream "." processEntry ds closeDirStream ds
This is a 200% increase in code size for a 75% decrease in execution time. (And, in general, the complexity can be much higher). That's an engineering tradeoff, and one you'll have to decide yourself; there's not much that can be done to make it go away.
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