[Haskell-cafe] Memo + IORef

Tony Morris tmorris at tmorris.net
Sat Jun 16 05:22:14 EDT 2007

I was told on #haskell (IRC) the other day that it is possible to write
a general memoisation table using IORef and unsafePerformIO. I can't
think of how this can be achieved without writing to a file, since a
function cannot hold state between invocations. What am I missing?

Tony Morris

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