[31325] in Perl-Users-Digest
Perl-Users Digest, Issue: 2570 Volume: 11
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Tue Aug 25 14:09:40 2009
Date: Tue, 25 Aug 2009 11:09:05 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Tue, 25 Aug 2009 Volume: 11 Number: 2570
Today's topics:
Re: Another way of resizing an Image? <graham.stow@stowassocs.co.uk>
Re: Another way of resizing an Image? <RedGrittyBrick@spamweary.invalid>
Re: Another way of resizing an Image? <thepoet_nospam@arcor.de>
Re: Another way of resizing an Image? <graham.stow@stowassocs.co.uk>
Re: Another way of resizing an Image? <tadmc@seesig.invalid>
Re: Another way of resizing an Image? <justin.0908@purestblue.com>
Re: Another way of resizing an Image? <glex_no-spam@qwest-spam-no.invalid>
Re: Another way of resizing an Image? <graham.stow@stowassocs.co.uk>
Posting Guidelines for comp.lang.perl.misc ($Revision: tadmc@seesig.invalid
Re: Preventing lines from printing <bart.lateur@pandora.be>
Re: Printing only on a match <dot@dot.dot>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Tue, 25 Aug 2009 10:41:25 +0100
From: "Graham" <graham.stow@stowassocs.co.uk>
Subject: Re: Another way of resizing an Image?
Message-Id: <2K6dnS0TJPZTLA7XnZ2dnUVZ8mednZ2d@bt.com>
"Tad J McClellan" <tadmc@seesig.invalid> wrote in message
news:slrnh95js9.l78.tadmc@tadmc30.sbcglobal.net...
> Graham <graham.stow@stowassocs.co.uk> wrote:
>
>> the ISP isn't
>> keen to enhance his Perl 5 installation by installing the Image::Resize
>> module (or any CPAN module come to that).
>
>> Can anyone suggest a workaround?
>
>
> Install the module yourself.
>
> perldoc -q module
>
> How do I keep my own module/library directory?
>
>
> --
> Tad McClellan
> email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"
This seemed fearfully complicated. Stuff I found on the web at
http://www.codingforums.com/archive/index.php/t-132429.html (What if Host
doesn't have module installed?) suggested copying a module's source code
then putting it in a 'mymodules' or similar directory on the website. I did
this, and point it from my script as follows:
use lib qw(/var/www/cgi-bin/mymodules/);
#use lib qw(/offline_website_directory/cgi-bin/mymodules/); # this works
on local machine!
use Image::Resize;
Resize.pm and GD.pm (GD.pm is used by Resize.pm) are both located in a
mymodules/Image directory
The script finds Resize.pm in the mymodules/Image directory on my local
machine (line 1 commented and line 2 uncommented), but doesn't find it on
the webserver with lines 1 and 2 as they are above. I'm pretty sure I've got
the path right, and all permissions on the website (directories, scripts,
and modules), are set at 750
Any ideas on why this doesn't work on the webserver?
------------------------------
Date: Tue, 25 Aug 2009 11:04:17 +0100
From: RedGrittyBrick <RedGrittyBrick@spamweary.invalid>
Subject: Re: Another way of resizing an Image?
Message-Id: <4a93b724$0$2536$da0feed9@news.zen.co.uk>
Graham wrote:
> "Tad J McClellan" <tadmc@seesig.invalid> wrote in message
> news:slrnh95js9.l78.tadmc@tadmc30.sbcglobal.net...
>> Graham <graham.stow@stowassocs.co.uk> wrote:
>>
>>> the ISP isn't
>>> keen to enhance his Perl 5 installation by installing the Image::Resize
>>> module (or any CPAN module come to that).
>>> Can anyone suggest a workaround?
>>
>> Install the module yourself.
>>
>> perldoc -q module
>>
>> How do I keep my own module/library directory?
>>
>>
>> --
>> Tad McClellan
>> email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"
>
> This seemed fearfully complicated. Stuff I found on the web at
> http://www.codingforums.com/archive/index.php/t-132429.html (What if Host
> doesn't have module installed?) suggested copying a module's source code
> then putting it in a 'mymodules' or similar directory on the website. I did
> this, and point it from my script as follows:
>
> use lib qw(/var/www/cgi-bin/mymodules/);
> #use lib qw(/offline_website_directory/cgi-bin/mymodules/); # this works
> on local machine!
> use Image::Resize;
>
> Resize.pm and GD.pm (GD.pm is used by Resize.pm) are both located in a
> mymodules/Image directory
>
> The script finds Resize.pm in the mymodules/Image directory on my local
> machine (line 1 commented and line 2 uncommented), but doesn't find it on
> the webserver with lines 1 and 2 as they are above. I'm pretty sure I've got
> the path right, and all permissions on the website (directories, scripts,
> and modules), are set at 750
>
> Any ideas on why this doesn't work on the webserver?
On a shared hosting server, /var/www/cgi-bin is very unlikely to be the
real path to the CGI directory for your website.
You could write a CGI script that displays @ENV and see what is in
variables such as $ENV{SCRIPT_FILENAME}.
--
RGB
------------------------------
Date: Tue, 25 Aug 2009 13:00:46 +0200
From: Christian Winter <thepoet_nospam@arcor.de>
Subject: Re: Another way of resizing an Image?
Message-Id: <4a93c45f$0$31862$9b4e6d93@newsspool3.arcor-online.net>
Graham wrote:
> "Tad J McClellan" <tadmc@seesig.invalid> wrote in message
> news:slrnh95js9.l78.tadmc@tadmc30.sbcglobal.net...
>> Graham <graham.stow@stowassocs.co.uk> wrote:
>>
>>> the ISP isn't
>>> keen to enhance his Perl 5 installation by installing the Image::Resize
>>> module (or any CPAN module come to that).
>>> Can anyone suggest a workaround?
>>
>> Install the module yourself.
>>
>> perldoc -q module
>>
>> How do I keep my own module/library directory?
>>
>>
> This seemed fearfully complicated. Stuff I found on the web at
> http://www.codingforums.com/archive/index.php/t-132429.html (What if Host
> doesn't have module installed?) suggested copying a module's source code
> then putting it in a 'mymodules' or similar directory on the website. I did
> this, and point it from my script as follows:
>
> use lib qw(/var/www/cgi-bin/mymodules/);
> #use lib qw(/offline_website_directory/cgi-bin/mymodules/); # this works
> on local machine!
> use Image::Resize;
>
> Resize.pm and GD.pm (GD.pm is used by Resize.pm) are both located in a
> mymodules/Image directory
This trick only works for pure-perl modules, but not for modules
containing C/C++ code (so-called XS modules) to link to native
libraries on the system. The GD package is one of those, as it
links to the native libgd. The same is also true for Image::Magick
(the PerlMagick package). If your hoster has installed neither of
those two, things will get tricky, because then you will need to compile
the modules yourself - either on the server (though it's doubtable
that the neccessary tools will be installed and usable) or locally by
compiling static module versions, in the worst case even doing a cross
compile for a different processor/operating system architecture.
> The script finds Resize.pm in the mymodules/Image directory on my local
> machine (line 1 commented and line 2 uncommented), but doesn't find it on
> the webserver with lines 1 and 2 as they are above. I'm pretty sure I've got
> the path right, and all permissions on the website (directories, scripts,
> and modules), are set at 750
>
> Any ideas on why this doesn't work on the webserver?
It's highly unlikely that the real path to the cig-bin directory will
be '/var/www/cgi-bin' in a (shared) hosting environment. To get the real
path, you can display how the webserver resolves the url with a
snippet of code like:
-------------------------------------------------------------------
#!/usr/bin/perl
use strict;
use warnings;
use File::Basename;
print "Content-Type: text/plain\n\n";
print dirname($ENV{"SCRIPT_FILENAME"});
--------------------------------------------------------------------
Btw., please don't quote signatures.
-Chris
------------------------------
Date: Tue, 25 Aug 2009 14:14:29 +0100
From: "Graham" <graham.stow@stowassocs.co.uk>
Subject: Re: Another way of resizing an Image?
Message-Id: <BMadnS58-bkhfg7XnZ2dnUVZ8mWdnZ2d@bt.com>
"Christian Winter" <thepoet_nospam@arcor.de> wrote in message
news:4a93c45f$0$31862$9b4e6d93@newsspool3.arcor-online.net...
> Graham wrote:
>> "Tad J McClellan" <tadmc@seesig.invalid> wrote in message
>> news:slrnh95js9.l78.tadmc@tadmc30.sbcglobal.net...
>>> Graham <graham.stow@stowassocs.co.uk> wrote:
>>>
>>>> the ISP isn't
>>>> keen to enhance his Perl 5 installation by installing the
>>>> Image::Resize
>>>> module (or any CPAN module come to that).
>>>> Can anyone suggest a workaround?
>>>
>>> Install the module yourself.
>>>
>>> perldoc -q module
>>>
>>> How do I keep my own module/library directory?
>>>
>>>
>> This seemed fearfully complicated. Stuff I found on the web at
>> http://www.codingforums.com/archive/index.php/t-132429.html (What if Host
>> doesn't have module installed?) suggested copying a module's source code
>> then putting it in a 'mymodules' or similar directory on the website. I
>> did this, and point it from my script as follows:
>>
>> use lib qw(/var/www/cgi-bin/mymodules/);
>> #use lib qw(/offline_website_directory/cgi-bin/mymodules/); # this
>> works on local machine!
>> use Image::Resize;
>>
>> Resize.pm and GD.pm (GD.pm is used by Resize.pm) are both located in a
>> mymodules/Image directory
>
> This trick only works for pure-perl modules, but not for modules
> containing C/C++ code (so-called XS modules) to link to native
> libraries on the system. The GD package is one of those, as it
> links to the native libgd. The same is also true for Image::Magick
> (the PerlMagick package). If your hoster has installed neither of
> those two, things will get tricky, because then you will need to compile
> the modules yourself - either on the server (though it's doubtable
> that the neccessary tools will be installed and usable) or locally by
> compiling static module versions, in the worst case even doing a cross
> compile for a different processor/operating system architecture.
>
>> The script finds Resize.pm in the mymodules/Image directory on my local
>> machine (line 1 commented and line 2 uncommented), but doesn't find it on
>> the webserver with lines 1 and 2 as they are above. I'm pretty sure I've
>> got the path right, and all permissions on the website (directories,
>> scripts, and modules), are set at 750
>>
>> Any ideas on why this doesn't work on the webserver?
>
> It's highly unlikely that the real path to the cig-bin directory will
> be '/var/www/cgi-bin' in a (shared) hosting environment. To get the real
> path, you can display how the webserver resolves the url with a
> snippet of code like:
> -------------------------------------------------------------------
> #!/usr/bin/perl
>
> use strict;
> use warnings;
> use File::Basename;
>
> print "Content-Type: text/plain\n\n";
>
> print dirname($ENV{"SCRIPT_FILENAME"});
> --------------------------------------------------------------------
>
Thanks! I ran this script and got '/var/www/cgi-bin' so it looks like I'm
correct. This is also the path shown in the right hand side of my FTP
program except when I first connect when it is
'/home/admin*****/mainwebsite_cgi/' (where ***** is my account number). I've
tried this path too and still no joy. I suppose it could be finding the
module with one or both of these paths but because the GD Package is not
pure-perl and has not been compiled, this is causing the error (all I get is
'Internal Server Error'). It looks like this is beyond me, so I guess I
really need to nag the ISP into installing the Image::Resize and its
dependancies. The trouble is you can only contact these poeple by tickets
through their web site, and if they want to ignore you, they will.
------------------------------
Date: Tue, 25 Aug 2009 08:29:50 -0500
From: Tad J McClellan <tadmc@seesig.invalid>
Subject: Re: Another way of resizing an Image?
Message-Id: <slrnh97p82.c1b.tadmc@tadmc30.sbcglobal.net>
Graham <graham.stow@stowassocs.co.uk> wrote:
> (all I get is
> 'Internal Server Error').
Look in the web server's error log for more information.
> really need to nag the ISP into installing the Image::Resize and its
> dependancies. The trouble is you can only contact these poeple by tickets
> through their web site, and if they want to ignore you, they will.
Vote with your wallet.
--
Tad McClellan
email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"
------------------------------
Date: Tue, 25 Aug 2009 14:19:41 -0000
From: Justin C <justin.0908@purestblue.com>
Subject: Re: Another way of resizing an Image?
Message-Id: <5b7d.4a93f2fd.467e5@zem>
On 2009-08-25, Graham <graham.stow@stowassocs.co.uk> wrote:
>
> use lib qw(/var/www/cgi-bin/mymodules/);
Is the path correct? IME when a host has multiple domains, it'll be
something like:
/var/www/site1/cgi-bin
It is unlikely that you'll have permission to write to a global cgi-bin
directory - unless it's CoLo and the server is your own, or you have a
virtual machine.
Another tack to try would be a relative path, so, for example:
use lib qw(../cgi-bin/mymodules/);
Justin.
--
Justin C, by the sea.
------------------------------
Date: Tue, 25 Aug 2009 10:14:42 -0500
From: "J. Gleixner" <glex_no-spam@qwest-spam-no.invalid>
Subject: Re: Another way of resizing an Image?
Message-Id: <4a93ffe2$0$89386$815e3792@news.qwest.net>
Graham wrote:
>[...] I suppose it could be finding the
> module with one or both of these paths but because the GD Package is not
> pure-perl and has not been compiled, this is causing the error (all I get is
> 'Internal Server Error'). It looks like this is beyond me, so I guess I
> really need to nag the ISP into installing the Image::Resize and its
> dependancies. The trouble is you can only contact these poeple by tickets
> through their web site, and if they want to ignore you, they will.
Your whole script is:
use lib qw(/var/www/cgi-bin/mymodules/);
use Image::Resize;
And that gives you 'Internal Server Error'?
Check the Web server's error log. You do need the header,
when running that as a CGI.
If all else fails, install everything on your own machine, resize
the images there and put them on the server.
------------------------------
Date: Tue, 25 Aug 2009 17:29:30 +0100
From: "Graham" <graham.stow@stowassocs.co.uk>
Subject: Re: Another way of resizing an Image?
Message-Id: <AbKdnU4bKYLvjAnXnZ2dnUVZ8mednZ2d@bt.com>
"J. Gleixner" <glex_no-spam@qwest-spam-no.invalid> wrote in message
news:4a93ffe2$0$89386$815e3792@news.qwest.net...
> Graham wrote:
>>[...] I suppose it could be finding the
>> module with one or both of these paths but because the GD Package is not
>> pure-perl and has not been compiled, this is causing the error (all I get
>> is 'Internal Server Error'). It looks like this is beyond me, so I guess
>> I really need to nag the ISP into installing the Image::Resize and its
>> dependancies. The trouble is you can only contact these poeple by tickets
>> through their web site, and if they want to ignore you, they will.
>
> Your whole script is:
>
> use lib qw(/var/www/cgi-bin/mymodules/);
> use Image::Resize;
>
> And that gives you 'Internal Server Error'?
> Check the Web server's error log. You do need the header,
> when running that as a CGI.
>
> If all else fails, install everything on your own machine, resize
> the images there and put them on the server.
Actually, that's the perfect answer! I now know that the guy who's taking
the images can only take them 2592 x 1944 - far too big to sensibly upload
to the server anyway. So I'll write a script that will resize them to 800 x
600 on my machine and also create 160 x 120 thumbs too, then upload the lot
to the server. Job done!
------------------------------
Date: Tue, 25 Aug 2009 02:19:48 -0500
From: tadmc@seesig.invalid
Subject: Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
Message-Id: <g6CdnWDahN0JDQ7XnZ2dnUVZ_rGdnZ2d@giganews.com>
Outline
Before posting to comp.lang.perl.misc
Must
- Check the Perl Frequently Asked Questions (FAQ)
- Check the other standard Perl docs (*.pod)
Really Really Should
- Lurk for a while before posting
- Search a Usenet archive
If You Like
- Check Other Resources
Posting to comp.lang.perl.misc
Is there a better place to ask your question?
- Question should be about Perl, not about the application area
How to participate (post) in the clpmisc community
- Carefully choose the contents of your Subject header
- Use an effective followup style
- Speak Perl rather than English, when possible
- Ask perl to help you
- Do not re-type Perl code
- Provide enough information
- Do not provide too much information
- Do not post binaries, HTML, or MIME
Social faux pas to avoid
- Asking a Frequently Asked Question
- Asking a question easily answered by a cursory doc search
- Asking for emailed answers
- Beware of saying "doesn't work"
- Sending a "stealth" Cc copy
Be extra cautious when you get upset
- Count to ten before composing a followup when you are upset
- Count to ten after composing and before posting when you are upset
-----------------------------------------------------------------
Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
This newsgroup, commonly called clpmisc, is a technical newsgroup
intended to be used for discussion of Perl related issues (except job
postings), whether it be comments or questions.
As you would expect, clpmisc discussions are usually very technical in
nature and there are conventions for conduct in technical newsgroups
going somewhat beyond those in non-technical newsgroups.
The article at:
http://www.catb.org/~esr/faqs/smart-questions.html
describes how to get answers from technical people in general.
This article describes things that you should, and should not, do to
increase your chances of getting an answer to your Perl question. It is
available in POD, HTML and plain text formats at:
http://www.rehabitation.com/clpmisc.shtml
For more information about netiquette in general, see the "Netiquette
Guidelines" at:
http://andrew2.andrew.cmu.edu/rfc/rfc1855.html
A note to newsgroup "regulars":
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A note about technical terms used here:
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We're not bossing you around; we're making the point without
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Do *NOT* send email to the maintainer of these guidelines. It will be
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writes down the consensus of the group.
Before posting to comp.lang.perl.misc
Must
This section describes things that you *must* do before posting to
clpmisc, in order to maximize your chances of getting meaningful replies
to your inquiry and to avoid getting flamed for being lazy and trying to
have others do your work.
The perl distribution includes documentation that is copied to your hard
drive when you install perl. Also installed is a program for looking
things up in that (and other) documentation named 'perldoc'.
You should either find out where the docs got installed on your system,
or use perldoc to find them for you. Type "perldoc perldoc" to learn how
to use perldoc itself. Type "perldoc perl" to start reading Perl's
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Check the Perl Frequently Asked Questions (FAQ)
Checking the FAQ before posting is required in Big 8 newsgroups in
general, there is nothing clpmisc-specific about this requirement.
You are expected to do this in nearly all newsgroups.
You can use the "-q" switch with perldoc to do a word search of the
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Check the other standard Perl docs (*.pod)
The perl distribution comes with much more documentation than is
available for most other newsgroups, so in clpmisc you should also
see if you can find an answer in the other (non-FAQ) standard docs
before posting.
It is *not* required, or even expected, that you actually *read* all of
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Try doing a word-search in the standard docs for some words/phrases
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Really Really Should
This section describes things that you *really should* do before posting
to clpmisc.
Lurk for a while before posting
This is very important and expected in all newsgroups. Lurking means
to monitor a newsgroup for a period to become familiar with local
customs. Each newsgroup has specific customs and rituals. Knowing
these before you participate will help avoid embarrassing social
situations. Consider yourself to be a foreigner at first!
Search a Usenet archive
There are tens of thousands of Perl programmers. It is very likely
that your question has already been asked (and answered). See if you
can find where it has already been answered.
One such searchable archive is:
http://groups.google.com/advanced_search
If You Like
This section describes things that you *can* do before posting to
clpmisc.
Check Other Resources
You may want to check in books or on web sites to see if you can
find the answer to your question.
But you need to consider the source of such information: there are a
lot of very poor Perl books and web sites, and several good ones
too, of course.
Posting to comp.lang.perl.misc
There can be 200 messages in clpmisc in a single day. Nobody is going to
read every article. They must decide somehow which articles they are
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Your post is in competition with 199 other posts. You need to "win"
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These sections describe how you can help keep your article from being
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Is there a better place to ask your question?
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Operating System related), so off-topic postings will happen from
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How to participate (post) in the clpmisc community
Carefully choose the contents of your Subject header
You have 40 precious characters of Subject to win out and be one of
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Spend them indicating what aspect of Perl others will find if they
should decide to read your article.
Do not spend them indicating "experience level" (guru, newbie...).
Do not spend them pleading (please read, urgent, help!...).
Do not spend them on non-Subjects (Perl question, one-word
Subject...)
For more information on choosing a Subject see "Choosing Good
Subject Lines":
http://www.cpan.org/authors/id/D/DM/DMR/subjects.post
Part of the beauty of newsgroup dynamics, is that you can contribute
to the community with your very first post! If your choice of
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Use an effective followup style
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Reversing the chronology of the dialog makes it much harder to
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For more information on quoting style, see:
http://web.presby.edu/~nnqadmin/nnq/nquote.html
Speak Perl rather than English, when possible
Perl is much more precise than natural language. Saying it in Perl
instead will avoid misunderstanding your question or problem.
Do not say: I have variable with "foo\tbar" in it.
Instead say: I have $var = "foo\tbar", or I have $var = 'foo\tbar',
or I have $var = <DATA> (and show the data line).
Ask perl to help you
You can ask perl itself to help you find common programming mistakes
by doing two things: enable warnings (perldoc warnings) and enable
"strict"ures (perldoc strict).
You should not bother the hundreds/thousands of readers of the
newsgroup without first seeing if a machine can help you find your
problem. It is demeaning to be asked to do the work of a machine. It
will annoy the readers of your article.
You can look up any of the messages that perl might issue to find
out what the message means and how to resolve the potential mistake
(perldoc perldiag). If you would like perl to look them up for you,
you can put "use diagnostics;" near the top of your program.
Do not re-type Perl code
Use copy/paste or your editor's "import" function rather than
attempting to type in your code. If you make a typo you will get
followups about your typos instead of about the question you are
trying to get answered.
Provide enough information
If you do the things in this item, you will have an Extremely Good
chance of getting people to try and help you with your problem!
These features are a really big bonus toward your question winning
out over all of the other posts that you are competing with.
First make a short (less than 20-30 lines) and *complete* program
that illustrates the problem you are having. People should be able
to run your program by copy/pasting the code from your article. (You
will find that doing this step very often reveals your problem
directly. Leading to an answer much more quickly and reliably than
posting to Usenet.)
Describe *precisely* the input to your program. Also provide example
input data for your program. If you need to show file input, use the
__DATA__ token (perldata.pod) to provide the file contents inside of
your Perl program.
Show the output (including the verbatim text of any messages) of
your program.
Describe how you want the output to be different from what you are
getting.
If you have no idea at all of how to code up your situation, be sure
to at least describe the 2 things that you *do* know: input and
desired output.
Do not provide too much information
Do not just post your entire program for debugging. Most especially
do not post someone *else's* entire program.
Do not post binaries, HTML, or MIME
clpmisc is a text only newsgroup. If you have images or binaries
that explain your question, put them in a publically accessible
place (like a Web server) and provide a pointer to that location. If
you include code, cut and paste it directly in the message body.
Don't attach anything to the message. Don't post vcards or HTML.
Many people (and even some Usenet servers) will automatically filter
out such messages. Many people will not be able to easily read your
post. Plain text is something everyone can read.
Social faux pas to avoid
The first two below are symptoms of lots of FAQ asking here in clpmisc.
It happens so often that folks will assume that it is happening yet
again. If you have looked but not found, or found but didn't understand
the docs, say so in your article.
Asking a Frequently Asked Question
It should be understood that you may have missed the applicable FAQ
when you checked, which is not a big deal. But if the Frequently
Asked Question is worded similar to your question, folks will assume
that you did not look at all. Don't become indignant at pointers to
the FAQ, particularly if it solves your problem.
Asking a question easily answered by a cursory doc search
If folks think you have not even tried the obvious step of reading
the docs applicable to your problem, they are likely to become
annoyed.
If you are flamed for not checking when you *did* check, then just
shrug it off (and take the answer that you got).
Asking for emailed answers
Emailed answers benefit one person. Posted answers benefit the
entire community. If folks can take the time to answer your
question, then you can take the time to go get the answer in the
same place where you asked the question.
It is OK to ask for a *copy* of the answer to be emailed, but many
will ignore such requests anyway. If you munge your address, you
should never expect (or ask) to get email in response to a Usenet
post.
Ask the question here, get the answer here (maybe).
Beware of saying "doesn't work"
This is a "red flag" phrase. If you find yourself writing that,
pause and see if you can't describe what is not working without
saying "doesn't work". That is, describe how it is not what you
want.
Sending a "stealth" Cc copy
A "stealth Cc" is when you both email and post a reply without
indicating *in the body* that you are doing so.
Be extra cautious when you get upset
Count to ten before composing a followup when you are upset
This is recommended in all Usenet newsgroups. Here in clpmisc, most
flaming sub-threads are not about any feature of Perl at all! They
are most often for what was seen as a breach of netiquette. If you
have lurked for a bit, then you will know what is expected and won't
make such posts in the first place.
But if you get upset, wait a while before writing your followup. I
recommend waiting at least 30 minutes.
Count to ten after composing and before posting when you are upset
After you have written your followup, wait *another* 30 minutes
before committing yourself by posting it. You cannot take it back
once it has been said.
AUTHOR
Tad McClellan and many others on the comp.lang.perl.misc newsgroup.
--
Tad McClellan
email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"
------------------------------
Date: Tue, 25 Aug 2009 08:46:44 +0200
From: Bart Lateur <bart.lateur@pandora.be>
Subject: Re: Preventing lines from printing
Message-Id: <sv17951a7bp9e26a1uti1csjd1o3r1h3ba@4ax.com>
Tim McDaniel wrote:
>In article <87zl9pw6im.fsf@quad.sysarch.com>,
>Uri Guttman <uri@StemSystems.com> wrote:
>>if you know about autoviv your code readers should know about it too.
>
>There's no way you can make that generalization. Example: you and me!
>You knew about it perfectly well, and I didn't.
>
>For another example, the cow-orker who is most likely to have to pick
>up my work doesn't like Perl, with the usual complaints that it's line
>noise, it's opaque, et cetera. It is dangerous for me to depend on
>subtle features.
Yet it's those subtle features that make Perl to what it is. It's those
features that make Perl popular, with the people who want to come to
YAPC for a hobby.
If you insist on only using features that are also in other languages,
like Java, then maybe you're better of using Java. If you strip down
Perl to the level of Java, then Perl will make a poor Java.
Autovivification is one of those things that make Perl so practical.
--
Bart.
------------------------------
Date: Tue, 25 Aug 2009 15:34:56 +1000
From: "Diamond, Mark" <dot@dot.dot>
Subject: Re: Printing only on a match
Message-Id: <h6vt66$40f$1@news-01.bur.connect.com.au>
Many thanks to all. My perl code now works correctly and is much easier to
read.
Cheers,
Mark
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>
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------------------------------
End of Perl-Users Digest V11 Issue 2570
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