[Haskell-cafe] Control.Concurrent.STM.old?

Thomas DuBuisson thomas.dubuisson at gmail.com
Fri Jan 18 18:14:22 EST 2008

Does the 'old' function referenced in the SPJ and Tim Harris data
invariants paper stil exist?  It is of type STM a -> STM a and allowed
invariants to compare old TVar values with new ones.  I can't find it in
any of the Haddocks or the code (and the 'check' funciton is not
commented in the Haddock).


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