On Tue, Jun 18, 2013 at 3:21 PM, Dan Liebgold <dan.liebg...@gmail.com>wrote:
> According to the docs, hash->list returns a list in an unspecified order. > Can anyone tell me a little about how hash->list might return two > different orders give the same hash table? Possibly across different > invocations of Racket? > > Thanks, > -- > Dan Liebgold [dan.liebg...@gmail.com] > Different invocations of Racket could do it; for instance, eq-hash-code assigns hash codes sequentially to objects on demand, so if objects were hashed in a different order nondeterministically, they would be put in a table in a different order. Adding or removing elements via mutation might also cause a table to be resized, and that might shuffle around the existing/remaining elements and cause them to be in a different order. --Carl
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