| ZVON > References > Haskell reference |
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| | Indexes | Syntax | Prelude | Ratio | Complex | Numeric | Ix | Array | List | Maybe | Char | Monad | IO | >> Directory << | System | Time | Locale | CPUTime | Random |
| Module: | Directory |
|---|---|
| Function: | doesFileExist |
| Type: | FilePath -> IO Bool |
| Description: | The operation doesFileExist returns True if the argument file exists and is not a directory, and False otherwise. |
| Related: |
Program source: import IO import Directory main = do hdl <- openFile "/tmp/foo.txt" WriteMode hPutStr hdl "Hello" hClose hdl x <- doesFileExist "/tmp/foo.txt" print x y <- doesFileExist "/tmp" print y
Output: True
Output: False
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