On Fri, Jun 22, 2012 at 5:30 PM, Captain Freako <capn.fre...@gmail.com> wrote: > 12 main = do > 13 let theValue = 1 > 14 print theValue > 15 theValueRef <- newIORef theValue > 16 bump theValueRef > 17 return theValue
theValue is a plain old immutable Haskell variable. "newIORef" creates an IORef whose initial value is equal to the argument; it doesn't create a pointer to the value or something like that. Change "return theValue" to "readIORef theValueRef" to extract the changed value in the IORef. --Max _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
