[Haskell-beginners] desugaring an example from RWH
Michael Easter
codetojoy at gmail.com
Mon Feb 23 09:33:40 EST 2009
Folks,
I have an example of the do-syntax that I would like to desugar. It is an
example from Chapter 28 in RWH.
I think I understand the ideas behind the following STM example, but I would
like to present it to others in a desugared way:
tryBogusSale = do
players@(alice:bob:_) <- atomically populateWorld
atomically $ alwaysSucceeds =<< consistentBalance players
bogusSale Wand 5 alice bob
I'm having problems especially with the 2nd line in the do block (i.e. the
predicate for alwaysSucceeds). I would like to try and express this in
terms of only bind (->) and return.
thanks!
Michael
--
----------------------
Michael Easter
http://codetojoy.blogspot.com: Putting the thrill back in blog
http://youtube.com/ocitv -> Fun people doing serious software engineering
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