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Groups > comp.lang.java.programmer > #33152
| From | Martin Gregorie <martin@address-in-sig.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Never using booleans as parameters |
| Date | 2015-11-20 11:54 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <n2n1ll$h3u$1@dont-email.me> (permalink) |
| References | <87lh9tysy8.fsf@Equus.decebal.nl> |
On Fri, 20 Nov 2015 09:29:35 +0100, Cecil Westerhof wrote:
> Often is said that you should never use booleans as parameters. But I
> have a function compareObjects that takes two objects and a boolean that
> signifies if the function is verbose. (Sends logging.)
>
> I could of-course define compareObjects and compareObjectsVerbose and
> instead of writing:
> compareObjects(a, b, useVerbose);
> I could write:
> if (useVerbose) {
> compareObjectsVerbose(a, b);
> } else {
> compareObjects(a, b);
> }
>
> But I do not find that cleaner code. But that could because I am not
> used to it. Would the second manner be better?
I have a debug class (ReportError) which takes a debug level via a
setDebug(int verbosity) method where verbosity 0 means no debugging, and
successively higher levels mean more verbosity. I normally set the
verbosity level from the command line of the program being debugged. The
basic debugging methods are:
trace(String)
- generates output to stderr
trace(level, values to be traced,...)
- generates output to stderr if verbosity >= level
istraceable(level)
- returns true or false. Used to control whether a set of
trace(string) trace statements should be executed
error(String)
- used to terminate the program with an error message
warn(String)
- used to output a warning and continue
ReportError can either generate stderr output immediately or simply write
output to a circular buffer which is output immediately before the text
of a warn() or error() call. This can be very useful when debugging rare
events in a very long-running program.
I normally declare one ReportError instance per program and pass its
reference as a constructor argument to all classes that support debugging.
This is a class I've had around for a very long time: it was originally
developed in C and, because I was used to having it, it got ported across
when I started to write Java.
--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |
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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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