URGENT: File exists

[bracaman@box.sk]

I need to create a function that checks if a file exists. My intention is to do something like:

 teste :: String -> Bool (Beeing the String the FilePath)

I've tried to use openFile and catch functions, but i couldn't put it working. The purpose of this function
is to test a file before trying to read it. Example:

if (test "filepath") then readfile else fail

Thank you very much for your help,

Joao

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