On Jan 10, 2010, at 00:24 , Thomas Hartman wrote:
Can somebody explain this?

getDirectoryContents inD

["..","#sanity
.txt
#",".","sanity
.txt
","etc
.txt
","patchTagDir
.txt
","jail
.txt","notjail.txt","alldata.txt","allobjs.txt","namesNSizes.txt"]

filterM doesFileExist =<< getDirectoryContents inD

["sanity.txt"]


My first guess is that inD isn't "."; getDirectoryContents doesn't fully qualify the names it returns, so doesFileExist looks in the current directory for the bare names returned.

--
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [email protected]
system administrator [openafs,heimdal,too many hats] [email protected]
electrical and computer engineering, carnegie mellon university    KF8NH


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