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Re: Relationship between -isEqual and -hash

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Re: Relationship between -isEqual and -hash

Subject: Re: Relationship between -isEqual and -hash
From: j o a r <email@hidden>
Date: Sun, 21 Jan 2007 08:58:18 +0100


On Jan 21, 2007, at 1:17 AM, John Stiles wrote:

Yes, it has to do this, otherwise dictionaries would very occasionally return wrong results.

...or almost always return incorrect results. It all depends on how well the hashing algorithm manages to create unique hash values for the items in the collection.

An interesting article on the topic of hashes and performance:

<http://www.mulle-kybernetik.com/artikel/Optimization/opti-7.html>

j o a r


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References:  
  >Re: Relationship between -isEqual and -hash (From: "Jeffrey J. Early" <email@hidden>)
  >Re: Relationship between -isEqual and -hash (From: John Stiles <email@hidden>)




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