simonmarhaskell at gmail.com
Tue Jan 22 09:38:59 EST 2008
Neil Mitchell wrote:
> Hi Simon
>> I've just come across this again. It's quite inconvenient that
>> takeDirectory "foo" == ""
>> because it means that you can't say
>> doesDirectoryExist (takeDirectory f)
> Yes, I came across this the other day. And am leaning towards agreeing with you.
> I think its reasonable if splitFileName keeps the same behaviour, and
> dropFileName as well, but takeDirectory follows the new behaviour. So:
> takeDirectory "foo" = "."
> takeDirectory "foo/bar" = "foo"
> dropFileName "foo" = ""
> dropFilename "foo/bar" = "foo/"
> Does that sound like a plan that suits everyone?
That seems strange, actually. I would expect, perhaps naively, that
takeDirectory == fst . splitFileName
dropFileName == takeDirectory
is there a good reason for these not to be true?
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