Groups > comp.lang.java.programmer > #39601

Re: Compare generics (that are numbers)

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From	Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Compare generics (that are numbers)
Date	Thu, 30 Jul 2020 09:03:14 -0400
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On 7/30/2020 5:33 AM, Cecil Westerhof wrote:
> Arne Vajhøj <arne@vajhoej.dk> writes:
> 
>> But if this is performance critical then why not just drop the
>> generic stuff and write specific code for the types?
> 
> Because I want to show the differences between using
> Float/float/Integer/int and different implementations thereof.

     Is this a "practical problem," or a "teaching exercise?"  If the
former, I'd be interested to know how it arises -- needing to compare
one arbitrary Number to another (BigDecimal vs. AtomicLong?) seems not
out of the question, but surely unusual.

     If it's a teaching tool, you might want to reconsider the vehicle.
As has been pointed out, some combinations (DoubleAdder vs. BigInteger,
others) raise a lot of thorny and niggling special cases that might
tend to obscure whatever point you're trying to put across.  Maybe if
folks had a better idea of the goals they'd suggest better approaches.

-- 
esosman@comcast-dot-net.invalid
If he's so rich, why ain't he smart?
One hundred seventy-four days to go.

Thread

Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 17:19 +0200
  Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 13:21 -0400
    Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 13:27 -0400
  Re: Compare generics (that are numbers) Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-29 13:48 -0400
    Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 20:42 +0200
      Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 14:50 -0400
        Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-29 21:53 +0200
          Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-29 21:32 -0400
            Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 11:33 +0200
              Re: Compare generics (that are numbers) Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-07-30 09:03 -0400
                Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 17:00 +0200
              Re: Compare generics (that are numbers) Arne Vajhøj <arne@vajhoej.dk> - 2020-07-30 09:21 -0400
          Re: Compare generics (that are numbers) Silvio <silvio@internet.com> - 2020-07-30 08:51 +0200
            Re: Compare generics (that are numbers) Cecil Westerhof <Cecil@decebal.nl> - 2020-07-30 11:36 +0200
  Re: Compare generics (that are numbers) Marcel Mueller <news.5.maazl@spamgourmet.org> - 2020-07-29 20:59 +0200

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