Generally
I use
iv hash bitXor: iv2 hash
Following Kent beck best practices
But now I learned that I want to avoid as much as possible to redefine = and hash and if this is just to sorted objects I used SortedCollection sortBlock: [:a :b| a iv > b iv] for example.
I think that identity related issues is one of the most complex in OO Design.
Stef
Le 1 juil. 05 à 11:04, Houssam Fakih a écrit :
Hi,
When I redefine the = operation for a class I should redefine its hash method.
My question is about the definition of the hash method. I read that the method must return a SmallInteger whose value is related to the receiver. I would like to know if there is a general pattern adopted in Squeak for that. I get a look in the Squeak classes but it doesn’t help.
Thanks,
Houssam
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