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Groups > comp.lang.java.programmer > #35731

Re: Comparison structure?

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: Comparison structure?
Date 2016-10-05 20:27 -0400
Organization Aioe.org NNTP Server
Message-ID <nt45q4$vuf$1@gioia.aioe.org> (permalink)
References (2 earlier) <cfb773de-671a-46e7-9d79-e821780c7bcb@googlegroups.com> <nt109m$r82$1@dont-email.me> <nt1gom$thu$1@gioia.aioe.org> <nt1oim$1646$1@gioia.aioe.org> <nt2qg6$o96$1@dont-email.me>

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On 10/5/2016 8:08 AM, Eric Sosman wrote:
> On 10/4/2016 10:29 PM, Arne Vajhøj wrote:
>> [...]
>>         private int compareMe;
>>         private int compareTo;
>> [...]
>>             switch(Integer.signum(compareMe - compareTo)) {
>
>     Bad Arne!  B-A-A-D Arne!  Wear this dunce cap and sit in the corner!
>
>     (Hint: Why do "sign-of-difference" and "comparison" sometimes
> give different answers?)
>
>     (Hint #2: compareMe = -100000, compareTo = 0x7fffffff)

OK. Integer.compare then.

Arne

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Thread

Comparison structure? Eric Douglas <e.d.programmer@gmail.com> - 2016-10-04 07:25 -0700
  Re: Comparison structure? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-04 10:46 -0400
  Re: Comparison structure? Roedy Green <inquiry@mindprod.com> - 2016-10-04 09:53 -0700
    Re: Comparison structure? Eric Douglas <e.d.programmer@gmail.com> - 2016-10-04 10:29 -0700
      Re: Comparison structure? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-04 15:35 -0400
        Re: Comparison structure? Arne Vajhøj <arne@vajhoej.dk> - 2016-10-04 20:16 -0400
          Re: Comparison structure? Arne Vajhøj <arne@vajhoej.dk> - 2016-10-04 22:29 -0400
            Re: Comparison structure? Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-10-05 08:08 -0400
              Re: Comparison structure? Arne Vajhøj <arne@vajhoej.dk> - 2016-10-05 20:27 -0400
  Re: Comparison structure? Martin Gregorie <martin@address-in-sig.invalid> - 2016-10-04 17:37 +0000
    Re: Comparison structure? Eric Douglas <e.d.programmer@gmail.com> - 2016-10-04 12:02 -0700
    Re: Comparison structure? j4n bur53 <janburse@fastmail.fm> - 2016-10-05 17:12 +0200
      Re: Comparison structure? j4n bur53 <janburse@fastmail.fm> - 2016-10-05 17:14 +0200
  Re: Comparison structure? Arne Vajhøj <arne@vajhoej.dk> - 2016-10-04 20:03 -0400
  Re: Comparison structure? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2016-10-05 22:41 +0200

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