unsafePtrCompare, anybody?

[Marcin 'Qrczak' Kowalczyk]

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.

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