[Haskell-cafe] Haskell trickery

Folks, How is one to interpret the following? I'm particularly interested in the IO $ \ s - notatoin as I have never seen that before. allocaBytes :: Int - (Ptr a - IO b) - IO b allocaBytes (I# size) action = IO $ \ s - case newPinnedByteArray# size s of { (# s, mbarr# #) -

Re: [Haskell-cafe] Haskell trickery

joelr1: Folks, How is one to interpret the following? I'm particularly interested in the IO $ \ s - notatoin as I have never seen that before. allocaBytes :: Int - (Ptr a - IO b) - IO b allocaBytes (I# size) action = IO $ \ s - case newPinnedByteArray# size s of { (# s,