Groups > comp.lang.java.programmer > #7761

Re: Style Police (a rant)

From	Wanja Gayk <brixomatic@yahoo.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: Style Police (a rant)
Date	2011-09-10 06:45 +0200
Organization	Netfront http://www.netfront.net/
Message-ID	<MPG.28d509bfb828d36d9896ad@202.177.16.121> (permalink)
References	<j39fdc$1hi$1@dont-email.me> <j3akb0$61g$1@news.albasani.net>

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In article <j3akb0$61g$1@news.albasani.net>, janburse@fastmail.fm 
says...
> 
> Eric Sosman schrieb:
> >      BUT if you have a concrete non-final method that actually *does*
> > something, you have not "designed for extension."  It's all in aid of
> > somebody's theory about programming style: You're all right as long as
> 
> I have noticed that final methods sometimes execute faster
> than non-final methods. The final modifier gives a hint to
> the optimizers.

Well, that myth is well debunked and if you're measuring some 
significant speeduph, maybe you should double check very closely what 
you're measuring (i.e. the "currentTimeMillis() method's variance can be 
up to 10 ms, sometimes the order of execution influences the measures, 
the JIT-Compile-Times and the GC). Putting up a microbenchmark that is 
not flawed can be a pretty daunting task.
These could are pretty good primers on the topic:
http://www.ibm.com/developerworks/java/library/j-jtp02225/index.html
http://www.ibm.com/developerworks/library/j-jtp12214/

That doesn't keep me from using final on references (not 
methods/classes) wherever possible and also refactoring my code to use 
that keyword when it does not compromise readability too much. The 
reason is that it makes understanding code easier for me.
Once you're used to seeing "final" everwhere, you'll especially note 
those places which are not marked finally; because they are the minority 
they stand out, they catch your attention. These are the variables - in 
the very sense of the word. The less variables you've got keep in mind, 
the easier it is to understand what code does. It has served me very 
well in the past 10 years and I do think it's worth the effort. You may 
argue that it is no good for methods which are basically just 3 lines 
long, but I'll do it there anyway: To avoid blurring the concept, 
keeping the habit, keeping the "not final means attention!" sense sharp.

So I'd like to use "final" to express my intention in code very 
precisely, I'm not doing it for optimizing things.
It's a shame that in Java not all references are implicitly final and 
only real variables get marked with "var" instead - that would serve the 
same purpose with less effort and less visual clutter.

Also with putting final in front of all method parameterts, long lists 
of parameters begin to smell and cry for a refactoring earlier, which 
isn't really a bad thing in my opinion (depends on code-formatting 
though).

Kind regards,
Wanja


-- 
..Alesi's problem was that the back of the car was jumping up and down 
dangerously - and I can assure you from having been teammate to 
Jean Alesi and knowing what kind of cars that he can pull up with, 
when Jean Alesi says that a car is dangerous - it is. [Jonathan Palmer]

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---

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Thread

Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-08-26 20:56 -0400
  Re: Style Police (a rant) Robert Klemme <shortcutter@googlemail.com> - 2011-08-27 09:58 +0200
  Re: Style Police (a rant) Rajiv Gupta <rajiv@invalid.com> - 2011-08-27 18:02 +1000
    Re: Style Police (a rant) v_borchert@despammed.com (Volker Borchert) - 2011-08-27 08:40 +0000
  Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 13:27 +0200
    Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 13:33 +0200
      Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-08-27 11:08 -0400
      Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 08:34 -0700
        Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 08:37 -0700
        Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 17:59 +0200
          Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 18:06 +0200
            Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 18:08 +0200
            Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 09:50 -0700
              Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 19:15 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 13:09 -0700
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-27 23:18 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 16:10 -0700
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-28 01:59 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 18:59 -0700
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-28 15:32 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-28 13:09 -0700
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-29 04:02 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-28 19:20 -0700
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-29 09:44 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-29 08:30 -0700
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-08-29 16:37 +0000
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-29 12:10 -0700
                Re: Style Police (a rant) Robert Klemme <shortcutter@googlemail.com> - 2011-08-29 18:21 +0200
                Re: Style Police (a rant) Jan Burse <janburse@fastmail.fm> - 2011-08-29 04:06 +0200
    Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-10 06:45 +0200
      Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-10 11:40 +0000
        Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-10 14:06 -0700
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 14:07 +0000
            Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:55 -0400
              Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:34 +0000
            Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:58 -0400
              Re: Style Police (a rant) Patricia Shanahan <pats@acm.org> - 2011-09-11 10:12 -0700
              Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-14 12:22 +0000
              Re: Style Police (a rant) Bent C Dalager <bcd@pvv.ntnu.no> - 2011-09-14 15:04 +0000
                Re: Style Police (a rant) Paul Cager <paul.cager@googlemail.com> - 2011-09-14 09:36 -0700
            Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 09:47 -0700
              Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:32 +0000
                Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-17 00:57 +0200
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-17 19:56 +0000
            Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 21:20 +0200
              Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-11 17:11 -0400
                Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-12 01:22 +0200
                Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 21:13 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-11 16:54 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-11 23:42 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:54 -0700
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-13 07:18 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 10:07 -0400
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-13 08:15 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 12:00 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-13 10:10 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 09:55 -0700
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-15 10:37 -0400
                Re: Style Police (a rant) "Cthun" <cthun_9112011@qmail.net.au> - 2011-09-15 22:58 -0400
                Murphy = Troll [DO NOT FEED] thoolen <th00len@th0lenbot.thorium> - 2011-09-16 00:23 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-16 03:26 -0700
                Re: Style Police (a rant) un-Bent <dob@dib.dib.null> - 2011-09-16 13:02 +0000
                Murphy = Troll [DO NOT FEED] thoolen <th00len@th0lenbot.thorium> - 2011-09-16 22:40 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-17 19:36 -0400
                Re: Style Police (a rant) "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 08:58 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-19 11:56 -0400
                Re: Style Police (a rant) "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 17:05 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-19 19:13 -0400
                Re: Style Police (a rant) k00k Derbyshire spins freely "kaffel'latte" <jiggingjava@qmail.net> - 2011-09-19 20:45 -0400
                Re: Style Police (a rant) k00k Derbyshire spins freely thoolen <th00len@th0lenbot.thorium> - 2011-09-21 18:37 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:56 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:12 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:59 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:13 -0400
              Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 23:17 +0000
                Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 21:12 -0400
                Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-12 07:36 -0300
              Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:58 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:12 -0400
        Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 15:33 +0200
          Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 09:42 -0700
            Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-11 20:35 +0200
              Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-11 16:55 -0700
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 20:36 -0700
                Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-12 10:05 +0200
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-12 15:35 -0700
                Re: Style Police (a rant) Lars Enderin <lars.enderin@telia.com> - 2011-09-13 10:35 +0200
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 09:48 -0700
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-13 12:18 -0700
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-13 17:30 -0700
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:59 -0700
                Re: Style Police (a rant) Joe Attardi <jattardi@gmail.com> - 2011-09-23 10:54 -0700
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-24 01:54 -0400
                Re: Style Police (a rant) Retahiv Oopsiscame <roopsisc@gmail.com> - 2011-09-12 21:58 -0700
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 04:52 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 05:14 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 06:42 -0400
                Re: Style Police (a rant) Cthun <cthun_117@qmail.net.au> - 2011-09-12 07:20 -0400
                Re: Style Police (a rant) "Cthun" <cthun_117@qmail.net.au> - 2011-09-12 08:46 -0400
                Re: Style Police (a rant) thoolen <th00len@th0lenbot.thorium> - 2011-09-12 21:03 -0400
              Re: Style Police (a rant) Tom Anderson <twic@urchin.earth.li> - 2011-09-12 20:18 +0100
            Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 21:20 +0200
              Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-11 13:52 -0700
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-12 00:17 +0000
      Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-10 21:32 -0400
        Re: Style Police (a rant) Wanja Gayk <brixomatic@yahoo.com> - 2011-09-11 13:27 +0200
          Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 11:05 -0400
        Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 13:23 +0000
          Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-11 10:04 -0400
            Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-11 12:45 -0300
              Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 16:53 -0400
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-14 12:30 +0000
                Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-14 20:47 -0400
                Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-09-14 18:06 -0700
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-15 10:06 +0000
                Re: Style Police (a rant) blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-09-20 11:28 +0000
                Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-20 07:36 -0400
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-20 13:04 +0000
                Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-20 20:34 -0300
                Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-09-14 22:33 -0300
                Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-15 13:46 +0000
                Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-14 21:40 -0400
          Re: Style Police (a rant) Arne Vajhøj <arne@vajhoej.dk> - 2011-09-11 10:59 -0400
            Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-09-11 21:25 +0000
  Re: Style Police (a rant) Tom Anderson <twic@urchin.earth.li> - 2011-08-27 14:00 +0100
    Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-27 08:42 -0700
    Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-08-27 11:58 -0400
  Re: Style Police (a rant) "John B. Matthews" <nospam@nospam.invalid> - 2011-08-28 08:21 -0400
    Re: Style Police (a rant) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-08-28 18:07 -0300
  Re: Style Police (a rant) Roedy Green <see_website@mindprod.com.invalid> - 2011-08-29 04:20 -0700
  Re: Style Police (a rant) Tim Slattery <Slattery_T@bls.gov> - 2011-08-29 09:11 -0400
    Re: Style Police (a rant) Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-08-29 20:50 -0400
      Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-08-30 11:27 +0000
        Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-30 09:36 -0700
          Re: Style Police (a rant) Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-08-30 17:51 +0000
      Re: Style Police (a rant) Tim Slattery <Slattery_T@bls.gov> - 2011-08-30 08:51 -0400
      Re: Style Police (a rant) Patricia Shanahan <pats@acm.org> - 2011-08-30 09:04 -0700
        Re: Style Police (a rant) Lew <lewbloch@gmail.com> - 2011-08-30 09:43 -0700
          Re: Style Police (a rant) Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-08-31 00:31 +0200

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