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Groups > comp.lang.java.programmer > #17854

Re: hashCode

From "Arne Vajhøj" <������ høj@1:261/38.remove-odu-this>
Subject Re: hashCode
Message-ID <50294F03.56802.calajapr@time.synchro.net> (permalink)
Newsgroups comp.lang.java.programmer
References <502943B2.56752.calajapr@time.synchro.net>
Date 2012-08-13 19:38 +0000
Organization tds.net

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  To: Lew
From: "=?UTF-8?B?QXJuZSBWYWpow7hq?=" <=?utf-8?b?qxjuzsbwywpow7hq?=@1:261/38.rem
ove-nlb-this>

  To: Lew
From: =?UTF-8?B?QXJuZSBWYWpow7hq?= <arne@vajhoej.dk>

On 8/12/2012 12:46 AM, Lew wrote:
> Arne Vajh-,j wrote:
>> But with the same performance note. And a big sigh because it
>> seems to want to broaden bad performance from a single class
>> to the entire programming style (multiple classes).
>
> Overriding 'hashCode()' is done for functional reasons, not performance
> reasons. If you fail to override the method, you'll get incorrect
> behavior, for example failing to find a collection member that is
> actually present.

Correct.

But the return constant is a special case. It functions as it should but 
performs very poorly.

Arne

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Re: hashCode "Lew" <lew@1:261/38.remove-nlb-this> - 2012-08-13 18:36 +0000
  Re: hashCode "Arne Vajhøj" <������
høj@1:261/38.remove-odu-this> - 2012-08-13 19:38 +0000
  Re: hashCode "Arne Vajhøj" <������
høj@1:261/38.remove-odu-this> - 2012-08-13 19:38 +0000

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