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Re: About java program.

From Arved Sandstrom <asandstrom2@eastlink.ca>
Newsgroups comp.lang.java.programmer
Subject Re: About java program.
References (2 earlier) <UoednTl5R618JiDMnZ2dnUVZ8iadnZ2d@bt.com> <b263siF2vkkU1@mid.individual.net> <uBDvt.60965$5i1.39234@newsfe15.iad> <ILKdnZ-vg53OjiLMnZ2dnUVZ7tmdnZ2d@bt.com> <kpo2oa$j1e$1@dont-email.me>
Message-ID <%L8wt.20476$5w3.6434@newsfe03.iad> (permalink)
Organization Public Usenet Newsgroup Access
Date 2013-06-18 23:33 -0300

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On 06/17/2013 07:36 PM, Joshua Cranmer 🐧 wrote:
> On 6/17/2013 8:46 AM, lipska the kat wrote:
>> ... and what is your opinion of defensive coding?
>
> The term, as I understand it, refers to coding under the assumption that
> everyone who uses your API is a stupid idiot who can't follow your rules
> properly. The matter at hand here is basically a stylistic concern about
> which is mentally easier to follow, which falls under the category of
> "everyone has an opinion which is strongly held and won't be changed."
[ SNIP ]

Like I stated in a different post in this thread, the stupid idiot is 
often you yourself (you as in impersonal "you"), since you wrote both 
the calling code and the called code, and six months later you are 
adapting the called code and can't remember the assumptions you made 
previously because you had a whitebox view then, and hence you f**k up.

Defensive coding actually means that stupid idiots who "can't follow 
your rules properly" don't mess up the called system. This has been 
fundamental software engineering since forever.

But you're right, that's not the matter at hand, since I assume that you 
yourself have a healthy appreciation for defensive coding.
>
> Style wars much? To me, personally, early-return is often valuable,
> especially in languages like C++ or Java which have useful constructs
> for handling post-call cleanup such as RAII or try-finally blocks. I'm
> going to stop short of saying I prefer early-return, since it is very
> much a decision that applies in a specific context, and these examples
> are all trying to apply a universally generic rule.
[ SNIP ]

Rule of thumb - if your average coder gets how the method does exits 
quickly, then your style is fine. These days - basically the last 2 
decades after programming became a commodity and most coders have 
minimal formal background - I'm all for coding to the LCD. Which means 
very defensive, and frequently not being elegant in favour of being obvious.

AHS
-- 
When a true genius appears, you can know him by this sign:
that all the dunces are in a confederacy against him.
-- Jonathan Swift

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Thread

About java program. rajbhaumik@gmail.com - 2013-06-15 13:38 -0700
  Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-06-15 16:50 -0400
  Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-06-16 01:12 +0200
    Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-16 14:21 +0100
      Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-06-16 17:28 +0200
        Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-16 19:52 +0100
          Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-06-16 15:50 -0400
        Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-17 09:36 +0100
        Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-17 09:49 -0300
          Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-17 14:46 +0100
            Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-17 13:32 -0300
            Re: About java program. Joerg Meier <joergmmeier@arcor.de> - 2013-06-17 20:32 +0200
              Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-06-17 14:49 -0400
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-17 18:38 -0300
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-06-17 18:30 -0400
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-18 17:33 -0300
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-04 22:56 -0400
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-18 00:13 +0200
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-18 17:50 -0300
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-19 08:50 +0100
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-19 15:16 -0300
                Re: About java program. Lew <lewbloch@gmail.com> - 2013-06-19 16:20 -0700
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 13:31 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 18:16 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 19:21 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 20:07 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 20:21 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 20:40 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-07 22:20 -0400
                Re: About java program. Lew <lewbloch@gmail.com> - 2013-07-07 21:47 -0700
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 06:58 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 08:07 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 08:58 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 09:18 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 09:47 -0400
                Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-07-08 10:07 -0400
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-19 16:42 +0200
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-20 23:33 -0300
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-21 04:16 +0000
                Re: About java program. Joerg Meier <joergmmeier@arcor.de> - 2013-06-21 12:27 +0200
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-21 21:14 +0000
                Re: About java program. Joerg Meier <joergmmeier@arcor.de> - 2013-06-21 23:37 +0200
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-21 23:42 +0000
                Re: About java program. Gene Wirchenko <genew@telus.net> - 2013-06-24 13:00 -0700
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-24 21:29 +0000
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-24 21:42 +0000
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-21 23:59 -0300
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-06-22 13:30 +0000
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-21 16:24 +0200
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-21 22:39 -0300
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-22 19:25 +0200
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-22 19:41 +0100
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-23 03:53 +0200
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-23 09:21 +0100
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-24 18:57 +0200
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-24 18:14 +0100
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-22 09:03 +0100
                Re: About java program. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-06-22 19:26 +0200
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-22 18:51 +0100
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-04 22:58 -0400
                Re: About java program. Joerg Meier <joergmmeier@arcor.de> - 2013-06-19 00:38 +0200
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-06-18 18:56 -0400
                Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-18 21:26 -0300
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-06-19 21:20 +0200
                Re: About java program. Sven Köhler <remove-sven.koehler@gmail.com> - 2013-06-20 11:23 +0300
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-06-20 19:18 +0200
                Re: About java program. blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2013-07-15 20:20 +0000
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-19 09:14 +0100
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-19 09:11 +0100
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-04 23:11 -0400
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-07-05 09:13 +0100
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-05 23:15 +0200
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-05 22:03 -0400
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-06 13:01 +0200
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-07-06 13:43 +0100
                Re: About java program. Martin Gregorie <martin@address-in-sig.invalid> - 2013-07-06 14:17 +0000
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-06 16:18 -0400
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-07-06 21:42 +0100
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-07-06 09:16 +0100
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-06 13:14 +0200
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-07-06 08:22 -0400
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-07 20:43 +0200
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-07-07 18:07 -0400
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-07 19:35 -0400
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-07-07 20:42 -0400
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-08 20:50 +0200
                Re: About java program. Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-07-08 15:01 -0400
                Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-07-08 23:29 +0200
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-06 16:27 -0400
                Re: About java program. Lew <lewbloch@gmail.com> - 2013-07-06 13:41 -0700
                Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-05 21:59 -0400
              Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-17 21:06 +0100
            Re: About java program. Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-06-17 17:36 -0500
              Re: About java program. Robert Klemme <shortcutter@googlemail.com> - 2013-06-18 08:24 +0200
              Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-18 09:03 +0100
                Re: About java program. Joshua Cranmer 🐧 <Pidgeot18@verizon.invalid> - 2013-06-18 13:07 -0500
                Re: About java program. Lew <lewbloch@gmail.com> - 2013-06-18 14:48 -0700
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-19 08:36 +0100
              Re: About java program. Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-06-18 23:33 -0300
                Re: About java program. lipska the kat <"nospam at neversurrender dot co dot uk"> - 2013-06-19 08:34 +0100
            Re: About java program. Arne VajhĂžj <arne@vajhoej.dk> - 2013-07-04 22:53 -0400
  Re: About java program. Roedy Green <see_website@mindprod.com.invalid> - 2013-06-16 07:04 -0700
  Re: About java program. Jeff Higgins <jeff@invalid.invalid> - 2013-06-18 04:06 -0400

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