[Haskell-cafe] Ord (IORef a)?
fjh007 at galois.com
Tue Jun 22 06:01:04 EDT 2004
On 22-Jun-2004, Simon Peyton-Jones <simonpj at microsoft.com> wrote:
> My own view is that this is fine -- IORefs shouldn't be in your inner
> loop, so an extra word in each is no big deal.
I find that attitude rather extraordinary and I do not agree.
For some applications, IORefs may well be a major contributor to
memory usage, and increasing the amount of space that they take up may
significantly decrease locality and hence performance.
Fergus J. Henderson | "I have always known that the pursuit
Galois Connections, Inc. | of excellence is a lethal habit"
Phone: +1 503 626 6616 | -- the last words of T. S. Garp.
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