This means its an unboxed tuple. See recent thread about boxed vs. unboxed.
-- Hal Daume III "Computer science is no more about computers | [EMAIL PROTECTED] than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume On Fri, 4 Oct 2002, David Sabel wrote: > Hi, > > can somebody explain what the notation (# ... #) > means? > > For example it is used in the definition of unsafePerformIO: > > unsafePerformIO :: IO a -> a > unsafePerformIO (IO m) = case m realWorld# of (# _, r #) -> r > > Thanks, David > > > _______________________________________________ > Glasgow-haskell-users mailing list > [EMAIL PROTECTED] > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users > _______________________________________________ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
