unsafePtrCompare, anybody?

Marcin 'Qrczak' Kowalczyk qrczak@knm.org.pl
15 Sep 2001 20:04:14 GMT

Sat, 15 Sep 2001 15:11:02 -0400, Leon Smith <lps@po.cwru.edu> pisze:

> The point of all of this is that now string equality, when strings
> are made into atoms, is just pointer equality, which is available
> as IOExts.unsafePtrEq.
> However, in this situation, pointer comparison is simply an
> arbitrary total order on the set of all atoms, which is all we need
> to implement finite maps based on search trees.

The physical pointer order changes with garbage collection.

 __("<  Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/
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