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Groups > comp.lang.java.programmer > #33233

Re: Never using booleans as parameters

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: Never using booleans as parameters
Date 2015-11-29 16:00 -0500
Organization Aioe.org NNTP Server
Message-ID <n3fp26$g3$4@speranza.aioe.org> (permalink)
References <87lh9tysy8.fsf@Equus.decebal.nl> <boolean-20151120181620@ram.dialup.fu-berlin.de> <n2sunp$soh$1@speranza.aioe.org> <MPG.30c53ade15a4d0419896a8@news.aioe.org>

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On 11/29/2015 10:40 AM, Brixomatic wrote:
> In article <n2sunp$soh$1@speranza.aioe.org>, Arne Vajhøj
> (arne@vajhoej.dk) says...
> what the parameters are.
>>
>> final int ONE_THREAD = 1;
>> final boolean VERBOSE_OFF = false;
>> engine.process(ONE_THREAD, VERBOSE_OFF);
>
> [..]
>
>> Note that the readability argument against literals
>> can be almost eliminated by a different design:
>>
>> engine.setThreads(1);
>> engine.setVerbose(false);
>> engine.process();
>
> That is forcing the "engine" to be a mutable object, which I consider a
> design flaw, of you can have otherwise. Especially if you only do that
> so avoid literals.

Lots of classes end up being mutable anyway.

But correct - if it could be unmutable with the arguments then
adding setters does make it mutable and have consequences for
concurrent usage.

Arne

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Thread

Never using booleans as parameters Cecil Westerhof <Cecil@decebal.nl> - 2015-11-20 09:29 +0100
  Re: Never using booleans as parameters Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-20 11:54 +0000
  Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-20 08:30 -0500
    Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-20 05:57 -0800
      Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-20 09:17 -0500
  Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-20 05:34 -0800
  Re: Never using booleans as parameters Silvio <silvio@internet.com> - 2015-11-20 18:18 +0100
    Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-20 16:08 -0500
      Re: Never using booleans as parameters Silvio <silvio@internet.com> - 2015-11-23 14:12 +0100
        Re: Never using booleans as parameters Silvio <silvio@internet.com> - 2015-11-23 14:23 +0100
          Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-23 08:42 -0500
            Re: Never using booleans as parameters Silvio <silvio@internet.com> - 2015-11-23 15:14 +0100
        Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-23 06:10 -0800
          Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 15:45 -0500
            Re: Never using booleans as parameters Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-30 00:08 +0000
              Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 19:32 -0500
              Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 19:39 -0500
              Re: Never using booleans as parameters Brixomatic <brixomatic@yahoo.com> - 2015-12-20 15:08 +0100
                Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-12-21 05:00 -0800
                Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-21 08:53 -0500
            Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-11-30 10:33 -0800
              Re: Never using booleans as parameters Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2015-12-02 15:51 +0200
      Re: Never using booleans as parameters Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2015-11-23 21:55 -0800
        Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-24 08:23 -0500
          Re: Never using booleans as parameters Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2015-11-27 22:52 -0800
        Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 15:55 -0500
  Re: Never using booleans as parameters leif.roar@dimnakorr.com - 2015-11-20 11:44 -0600
    Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-20 10:08 -0800
    Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-22 14:03 -0500
  Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-11-20 10:14 -0800
    Re: Never using booleans as parameters Eternal Hope <laughingspam99@gmail.com> - 2015-11-22 14:27 +0000
  Re: Never using booleans as parameters Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2015-11-20 20:13 -0800
    Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-23 04:59 -0800
      Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 15:53 -0500
  Re: Never using booleans as parameters galt_57@hotmail.com - 2015-11-22 09:02 -0800
    Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-22 12:20 -0500
  Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-22 12:41 -0500
    Re: Never using booleans as parameters Martin Gregorie <martin@address-in-sig.invalid> - 2015-11-22 18:06 +0000
    Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-11-25 14:21 -0800
      Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 15:58 -0500
        Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-11-30 10:39 -0800
    Re: Never using booleans as parameters Brixomatic <brixomatic@yahoo.com> - 2015-11-29 16:40 +0100
      Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 16:00 -0500
        Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 19:26 -0500
          Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-11-30 06:16 -0800
  Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-22 14:01 -0500
  Re: Never using booleans as parameters Fredrik Jonson <fredrik@jonson.org> - 2015-11-24 18:50 +0000
  Re: Never using booleans as parameters Sir Hugh Jarce <hugh@example.com> - 2015-11-27 10:07 +0000
    Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 15:49 -0500
  Re: Never using booleans as parameters Brixomatic <brixomatic@yahoo.com> - 2015-11-29 16:33 +0100
    Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-29 15:57 -0500
      Re: Never using booleans as parameters Arne Vajhøj <arne@vajhoej.dk> - 2015-11-29 16:01 -0500
      Re: Never using booleans as parameters Brixomatic <brixomatic@yahoo.com> - 2015-12-20 15:00 +0100
        Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-12-21 10:50 -0800
    Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-11-30 10:48 -0800
      Re: Never using booleans as parameters Brixomatic <brixomatic@yahoo.com> - 2015-12-20 15:44 +0100
        Re: Never using booleans as parameters Gene Wirchenko <genew@telus.net> - 2015-12-21 10:56 -0800
        Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-21 15:30 -0500
          Re: Never using booleans as parameters Eric Douglas <e.d.programmer@gmail.com> - 2015-12-21 12:47 -0800
            Re: Never using booleans as parameters Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-12-21 16:29 -0500

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