I have a file with the following relevant lines:

import qualified Control.Concurrent as C

...

isCancelled = C.isEmptyMvar . stopConcurrentProcess   

Trying to compile this or run it in ghci yields a puzzling error message:

Not in scope: `C.isEmptyMvar'

    Perhaps you meant one of these:

      `C.isEmptyMVar' (imported from Control.Concurrent),

      `C.isEmptyChan' (imported from Control.Concurrent)

Any idea what could be going wrong?

_______________________________________________
Beginners mailing list
Beginners@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners