From: ts <decoux@...>
Date: 2001-06-22T22:42:44+09:00
Subject: [ruby-talk:16764] Re: uniq and "equivalence"

>>>>> "H" == Hugh Sasse Staff Elec Eng <hgs@dmu.ac.uk> writes:

H> Array.uniq seems to rely on deleting multiple references to the same object.
H> Furthermore, this test for sameness seems to be based on object.id rather
H> than == or ===.  Most of the time this is right and proper, and also 
H> efficient. I support my belief that this is going on with:

 Array#uniq make first an hash, then delete the elements.

H> When this behaviour of uniq is not not what I want, how do I change it?

 Change the hash function for the objects


Guy Decoux