Re: [Haskell-beginners] the ($) function (was desugaring an example from RWH)

23 Feb 2009

      I had exactly the same confusion - not explaining ($) in RWH was major
dropped ball IMO.
...
bogusTransfer qty fromBal toBal = do
    fromQty <- atomically $ readTVar fromBal
    [snip]
... is equivalent to:
bogusTransfer qty fromBal toBal = do
     fromQty <- atomically ( readTVar fromBal
     [snip]
     )

... so using ($) prevents accumulating a great big set of parentheses
to close at the end of a long block.

-- 
"There is no way to peace; peace is the way"

Re: [Haskell-beginners] the ($) function (was desugaring an example from RWH)

John Hartnup