[32208] in Perl-Users-Digest
Perl-Users Digest, Issue: 3473 Volume: 11
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Tue Aug 16 06:09:22 2011
Date: Tue, 16 Aug 2011 03:09:07 -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, 16 Aug 2011 Volume: 11 Number: 3473
Today's topics:
correct syntax if hash does not exist <john1949@yahoo.com>
Re: correct syntax if hash does not exist <rweikusat@mssgmbh.com>
Re: correct syntax if hash does not exist <rweikusat@mssgmbh.com>
Re: correct syntax if hash does not exist <john1949@yahoo.com>
Finding specific HTML in a document <laredotornado@zipmail.com>
Re: Finding specific HTML in a document <tadmc@seesig.invalid>
gui <r@thevoid1.net>
Re: gui <tadmc@seesig.invalid>
help bad thoughts phones <r@thevoid1.net>
Re: help bad thoughts phones <jurgenex@hotmail.com>
Re: How to disregard the first match of a loop? <rweikusat@mssgmbh.com>
Re: How to disregard the first match of a loop? <tzz@lifelogs.com>
Posting Guidelines for comp.lang.perl.misc ($Revision: tadmc@seesig.invalid
Re: Script to align columns in a text table. (David Combs)
Re: Script to align columns in a text table. <glennj@ncf.ca>
virus scanner <r@thevoid1.net>
Re: virus scanner <vilain@NOspamcop.net>
Re: virus scanner <jurgenex@hotmail.com>
Re: virus scanner <john1949@yahoo.com>
Re: which is faster ? <r@thevoid1.net>
Re: which is faster ? <jurgenex@hotmail.com>
Re: which is faster ? <rweikusat@mssgmbh.com>
Re: which is faster ? <tadmc@seesig.invalid>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Mon, 15 Aug 2011 13:59:12 +0100
From: "John" <john1949@yahoo.com>
Subject: correct syntax if hash does not exist
Message-Id: <j2b55s$krs$1@news.albasani.net>
Hi
Part of code.
If hash does not exist make it null.
Is this the correct syntax?
my %data; my $hash=\%data;
.......
my $error=$hash->{error} or '';
Regards
John
------------------------------
Date: Mon, 15 Aug 2011 14:08:38 +0100
From: Rainer Weikusat <rweikusat@mssgmbh.com>
Subject: Re: correct syntax if hash does not exist
Message-Id: <87pqk69609.fsf@sapphire.mobileactivedefense.com>
"John" <john1949@yahoo.com> writes:
> Part of code.
>
> If hash does not exist make it null.
>
> Is this the correct syntax?
>
> my %data; my $hash=\%data;
> .......
> my $error=$hash->{error} or '';
It is correct, but more than a little weird: There is no reason to
declare a hash and assign a reference to that to a scalar variable to
get a hash reference. Provided that a hash reference is what it
actually desired,
my $hash = {};
or just using $hash as hash references in an lvalue context would be
sufficient, eg
my $hash;
$hash->{key} = 'value';
Also, for a sufficiently recent version of Perl,
my $error = $hash->{error} // '';
might be a better choice because it only uses the empty string in
place of the value stored in the hash when this value happened to be
undefined, as opposed to 'something evaluating to false', ie, an empty
string or a numerical zero.
Lastly, this smells a lot like trying to obfuscate one's way around
the "It is undef! Panic in the streets!!" warning somebody has chosen
to code into Perl for some weird reason. A good solution for the
'computer prints nonsense when doing X' problem is 'not doing X', in
this case, not running with warnings enabled.
------------------------------
Date: Mon, 15 Aug 2011 18:27:18 +0100
From: Rainer Weikusat <rweikusat@mssgmbh.com>
Subject: Re: correct syntax if hash does not exist
Message-Id: <87d3g660w9.fsf@sapphire.mobileactivedefense.com>
Rainer Weikusat <rweikusat@mssgmbh.com> writes:
> "John" <john1949@yahoo.com> writes:
>> Part of code.
[...]
>> my $error=$hash->{error} or '';
[...]
> Lastly, this smells a lot like trying to obfuscate one's way around
> the "It is undef! Panic in the streets!!" warning somebody has chosen
> to code into Perl for some weird reason.
As opposed to what I assumed, the assignment dosn't trigger this
warning.
------------------------------
Date: Tue, 16 Aug 2011 07:07:39 +0100
From: "John" <john1949@yahoo.com>
Subject: Re: correct syntax if hash does not exist
Message-Id: <j2d1e6$4vp$1@news.albasani.net>
"Rainer Weikusat" <rweikusat@mssgmbh.com> wrote in message
news:87pqk69609.fsf@sapphire.mobileactivedefense.com...
> "John" <john1949@yahoo.com> writes:
>> Part of code.
>>
>> If hash does not exist make it null.
>>
>> Is this the correct syntax?
>>
>> my %data; my $hash=\%data;
>> .......
>> my $error=$hash->{error} or '';
>
> It is correct, but more than a little weird: There is no reason to
> declare a hash and assign a reference to that to a scalar variable to
> get a hash reference. Provided that a hash reference is what it
> actually desired,
>
> my $hash = {};
>
> or just using $hash as hash references in an lvalue context would be
> sufficient, eg
>
> my $hash;
> $hash->{key} = 'value';
>
> Also, for a sufficiently recent version of Perl,
>
> my $error = $hash->{error} // '';
>
> might be a better choice because it only uses the empty string in
> place of the value stored in the hash when this value happened to be
> undefined, as opposed to 'something evaluating to false', ie, an empty
> string or a numerical zero.
>
> Lastly, this smells a lot like trying to obfuscate one's way around
> the "It is undef! Panic in the streets!!" warning somebody has chosen
> to code into Perl for some weird reason. A good solution for the
> 'computer prints nonsense when doing X' problem is 'not doing X', in
> this case, not running with warnings enabled.
Many thanks.
Cannot find any reference to //.
I might as well stick to if (not defined ..
Regards
John
------------------------------
Date: Mon, 15 Aug 2011 10:11:44 -0700 (PDT)
From: laredotornado <laredotornado@zipmail.com>
Subject: Finding specific HTML in a document
Message-Id: <63b5c75f-d539-4a73-a243-5831fde1e3b1@y16g2000yqk.googlegroups.com>
Hi,
I'm using 5.10.1 on Ubuntu Linux 11.04. I want to search an HTML file
to see whether or not there is a table row that matches
<tr>
<td>numTestFailures:</td>
<td>0</td>
</tr>
That is, contains a single table row with table table cells, the first
of which contains the node value "numTestFailures:" and the second
containing the node value "0" (zero). All I'm looking for is a true/
false. What is the easiest way to do that?
Thanks, - Dave
------------------------------
Date: Mon, 15 Aug 2011 13:58:22 -0500
From: Tad McClellan <tadmc@seesig.invalid>
Subject: Re: Finding specific HTML in a document
Message-Id: <slrnj4iqk2.8cv.tadmc@tadbox.sbcglobal.net>
laredotornado <laredotornado@zipmail.com> wrote:
> Hi,
>
> I'm using 5.10.1 on Ubuntu Linux 11.04. I want to search an HTML file
> to see whether or not there is a table row that matches
>
><tr>
><td>numTestFailures:</td>
><td>0</td>
></tr>
>
> That is, contains a single table row with table table cells, the first
> of which contains the node value "numTestFailures:" and the second
> containing the node value "0" (zero). All I'm looking for is a true/
> false. What is the easiest way to do that?
use HTML::TableExtract;
--
Tad McClellan
email: perl -le "print scalar reverse qq/moc.liamg\100cm.j.dat/"
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.
------------------------------
Date: Sun, 14 Aug 2011 23:31:20 -0600
From: robin <r@thevoid1.net>
Subject: gui
Message-Id: <j2aavs$vkl$1@speranza.aioe.org>
anyone know of any NEW perl gui toolkits?
r@thevoid1.net
-r
------------------------------
Date: Mon, 15 Aug 2011 13:58:47 -0500
From: Tad McClellan <tadmc@seesig.invalid>
Subject: Re: gui
Message-Id: <slrnj4iqkr.8cv.tadmc@tadbox.sbcglobal.net>
robin <r@thevoid1.net> wrote:
> anyone know of any NEW perl gui toolkits?
Yes.
--
Tad McClellan
email: perl -le "print scalar reverse qq/moc.liamg\100cm.j.dat/"
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.
------------------------------
Date: Mon, 15 Aug 2011 20:26:01 -0600
From: robin <r@thevoid1.net>
Subject: help bad thoughts phones
Message-Id: <j2ckgi$67h$1@speranza.aioe.org>
stop them with curing charm rigs thoughts phones :-)
------------------------------
Date: Mon, 15 Aug 2011 19:30:20 -0700
From: Jürgen Exner <jurgenex@hotmail.com>
Subject: Re: help bad thoughts phones
Message-Id: <jglj475o4dqbcq2pk2pg4h4tlsmilb7gmh@4ax.com>
robin <r@thevoid1.net> wrote:
>stop them with curing charm rigs thoughts phones :-)
Would you mind posting an English translation of this, please?
jue
------------------------------
Date: Sun, 14 Aug 2011 20:04:21 +0100
From: Rainer Weikusat <rweikusat@mssgmbh.com>
Subject: Re: How to disregard the first match of a loop?
Message-Id: <87zkjb24sq.fsf@sapphire.mobileactivedefense.com>
Charlton Wilbur <cwilbur@chromatico.net> writes:
>>>>>> "RW" == Rainer Weikusat <rweikusat@mssgmbh.com> writes:
> RW> As I already wrote in the indirect reply to 'Ted 0.5" (safely
> RW> resting in my killfile until he either posts something sensible
> RW> or kingdom come, me expecting rather the latter than the
> RW> former),
[...]
> Secundus: if he does post something sensible, even by your definition -
> if he's killfiled, how will you know?
Because I will see a part of that quoted in someone else's reply.
------------------------------
Date: Mon, 15 Aug 2011 07:03:42 -0500
From: Ted Zlatanov <tzz@lifelogs.com>
Subject: Re: How to disregard the first match of a loop?
Message-Id: <87k4ae6fvl.fsf@lifelogs.com>
On Fri, 12 Aug 2011 15:59:03 -0400 Charlton Wilbur <cwilbur@chromatico.net> wrote:
>>>>>> "RW" == Rainer Weikusat <rweikusat@mssgmbh.com> writes:
RW> As I already wrote in the indirect reply to 'Ted 0.5" (safely
RW> resting in my killfile until he either posts something sensible
RW> or kingdom come, me expecting rather the latter than the
RW> former),
CW> Imprimis: whose definition of sensible? Yours, presumably, O Humpty
CW> Dumpty.
CW> Secundus: if he does post something sensible, even by your definition -
CW> if he's killfiled, how will you know?
CW> I feel like I'm arguing with the Red Queen here.
The best you can hope for is to get killfiled by the "Renaissance Man."
Rational discussion with him is circular, pointless, and pretty boring;
insulting him is apparently just a process of self-discovery.
Technically his comments are less useful than line noise because they
are misleading enough to be harmful and start ridiculous arguments. On
top of all that, he earnestly believes he knows Perl, or is a very good
troll. So you either have to reduce him to absurdity or argue forever.
I'm pretty happy with the former and hope he killfiles himself soon
(because, remember, it's all about the self-discovery).
Ted
------------------------------
Date: Tue, 16 Aug 2011 02:17:46 -0500
From: tadmc@seesig.invalid
Subject: Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
Message-Id: <U_KdndtgptMHhNfTnZ2dnUVZ5oSdnZ2d@giganews.com>
Outline
Before posting to comp.lang.perl.misc
Must
- Check the Perl Frequently Asked Questions (FAQ)
- Check the other standard Perl docs (*.pod)
Really Really Should
- Lurk for a while before posting
- Search a Usenet archive
If You Like
- Check Other Resources
Posting to comp.lang.perl.misc
Is there a better place to ask your question?
- Question should be about Perl, not about the application area
How to participate (post) in the clpmisc community
- Carefully choose the contents of your Subject header
- Use an effective followup style
- Speak Perl rather than English, when possible
- Ask perl to help you
- Do not re-type Perl code
- Provide enough information
- Do not provide too much information
- Do not post binaries, HTML, or MIME
Social faux pas to avoid
- Asking a Frequently Asked Question
- Asking a question easily answered by a cursory doc search
- Asking for emailed answers
- Beware of saying "doesn't work"
- Sending a "stealth" Cc copy
Be extra cautious when you get upset
- Count to ten before composing a followup when you are upset
- Count to ten after composing and before posting when you are upset
-----------------------------------------------------------------
Posting Guidelines for comp.lang.perl.misc ($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":
Do not use these guidelines as a "license to flame" or other
meanness. It is possible that a poster is unaware of things
discussed here. Give them the benefit of the doubt, and just
help them learn how to post, rather than assume that they do
know and are being the "bad kind" of Lazy.
A note about technical terms used here:
In this document, we use words like "must" and "should" as
they're used in technical conversation (such as you will
encounter in this newsgroup). When we say that you *must* do
something, we mean that if you don't do that something, then
it's unlikely that you will benefit much from this group.
We're not bossing you around; we're making the point without
lots of words.
Do *NOT* send email to the maintainer of these guidelines. It will be
discarded unread. The guidelines belong to the newsgroup so all
discussion should appear in the newsgroup. I am just the secretary that
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
standard documentation.
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
questions in the Perl FAQs.
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
Perl's standard docs, only that you spend a few minutes searching them
before posting.
Try doing a word-search in the standard docs for some words/phrases
taken from your problem statement or from your very carefully worded
"Subject:" header.
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
going to read, and which they will skip.
Your post is in competition with 199 other posts. You need to "win"
before a person who can help you will even read your question.
These sections describe how you can help keep your article from being
one of the "skipped" ones.
Is there a better place to ask your question?
Question should be about Perl, not about the application area
It can be difficult to separate out where your problem really is,
but you should make a conscious effort to post to the most
applicable newsgroup. That is, after all, where you are the most
likely to find the people who know how to answer your question.
Being able to "partition" a problem is an essential skill for
effectively troubleshooting programming problems. If you don't get
that right, you end up looking for answers in the wrong places.
It should be understood that you may not know that the root of your
problem is not Perl-related (the two most frequent ones are CGI and
Operating System related), so off-topic postings will happen from
time to time. Be gracious when someone helps you find a better place
to ask your question by pointing you to a more applicable newsgroup.
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
the posts that gets read. Don't waste them. Take care while
composing them, they are the key that opens the door to getting an
answer.
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
Subject leads a fellow Perler to find the thread you are starting,
then even asking a question helps us all.
Use an effective followup style
When composing a followup, quote only enough text to establish the
context for the comments that you will add. Always indicate who
wrote the quoted material. Never quote an entire article. Never
quote a .signature (unless that is what you are commenting on).
Intersperse your comments *following* each section of quoted text to
which they relate. Unappreciated followup styles are referred to as
"top-posting", "Jeopardy" (because the answer comes before the
question), or "TOFU" (Text Over, Fullquote Under).
Reversing the chronology of the dialog makes it much harder to
understand (some folks won't even read it if written in that style).
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.liamg\100cm.j.dat/"
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.
------------------------------
Date: Sun, 14 Aug 2011 15:19:01 +0000 (UTC)
From: dkcombs@panix.com (David Combs)
Subject: Re: Script to align columns in a text table.
Message-Id: <j28p14$sr8$1@reader1.panix.com>
In article <LpKdnZJVmux6k7HTnZ2dnUVZ7sqdnZ2d@bt.com>,
RedGrittyBrick <RedGrittyBrick@SpamWeary.invalid> wrote:
>I use a plain-text mark-up system to produce HTML and PDF documents from
>plain text files which I edit using a text editor.
> my @rows_of_columns;
>
>
>__DATA__
> Title
>+---+---+---+
>|Fruit|Price|No.|
>+---+---+---+
>|Apples|3.63|100|
>+---+---+---+
>|Sweet|17|5.000|
>|Potatoes| | |
>+---+---+---+
> Caption
>
>-----------------------------8<--------------------------------------
>
>Output:
>
> Title
>+--------+-----+-----+
>|Fruit |Price|No. |
>+--------+-----+-----+
>|Apples |3.63 |100 |
>+--------+-----+-----+
>|Sweet |17 |5.000|
>|Potatoes| | |
>+--------+-----+-----+
> Caption
>
>
>--
>RGB
Hey, you can do that REALLY EASILY in EMACS (gnu) --
it's got some "table" functions, etc, that will
automatically create that table.
And it's really cool, that table feature!
In the standard emacs manual (eg your emacs' "info" system,
via "C-h i"), just search down the "table of contents" for
EMACS, looking for "Editing Text-Based Tables".
Try it, you'll like it!
David
------------------------------
Date: 15 Aug 2011 14:29:22 GMT
From: Glenn Jackman <glennj@ncf.ca>
Subject: Re: Script to align columns in a text table.
Message-Id: <slrnj4iba2.5iu.glennj@smeagol.ncf.ca>
At 2011-07-25 12:32PM, "Jim Gibson" wrote:
> In article <LpKdnZJVmux6k7HTnZ2dnUVZ7sqdnZ2d@bt.com>, RedGrittyBrick
> <RedGrittyBrick@SpamWeary.invalid> wrote:
>
> > I use a plain-text mark-up system to produce HTML and PDF documents from
> > plain text files which I edit using a text editor.
> > (see http://superuser.com/questions/209897/text-formatter-tools/)
> >
> > When you edit a table in the midst of a file, it is tedious to insert or
> > delete numerous spaces to get the columns to line up. I needed to filter
> > chunks of text through a tool a little better suited to this than Unix's
> > `column` utility - so I wrote the following Perl script.
> >
>
> Have you looked at the Text::Table module? (I have not used it).
I recently installed Text::FormatTable which works well.
--
Glenn Jackman
Write a wise saying and your name will live forever. -- Anonymous
------------------------------
Date: Sun, 14 Aug 2011 23:34:04 -0600
From: robin <r@thevoid1.net>
Subject: virus scanner
Message-Id: <j2ab51$ad$1@speranza.aioe.org>
wondering, does anyone know, how can you use perl to make a virus
scanner to check for files that contain viruses and such?
-r
------------------------------
Date: Sun, 14 Aug 2011 22:49:31 -0700
From: Michael Vilain <vilain@NOspamcop.net>
Subject: Re: virus scanner
Message-Id: <vilain-1F6D6B.22493114082011@news.individual.net>
In article <j2ab51$ad$1@speranza.aioe.org>, robin <r@thevoid1.net>
wrote:
> wondering, does anyone know, how can you use perl to make a virus
> scanner to check for files that contain viruses and such?
> -r
By reading the Perl Camel Book and coding your own scanner.
[do your own fucking homework]
--
DeeDee, don't press that button! DeeDee! NO! Dee...
[I filter all Goggle Groups posts, so any reply may be automatically ignored]
------------------------------
Date: Sun, 14 Aug 2011 23:09:46 -0700
From: Jürgen Exner <jurgenex@hotmail.com>
Subject: Re: virus scanner
Message-Id: <bvdh47llch2ri241onipe8fn2bgtigqect@4ax.com>
robin <r@thevoid1.net> wrote:
>wondering, does anyone know, how can you use perl to make a virus
>scanner to check for files that contain viruses and such?
Maybe reading
perldoc File::Find
perldoc -f open
would be a start.
jue
------------------------------
Date: Mon, 15 Aug 2011 08:11:48 +0100
From: "John" <john1949@yahoo.com>
Subject: Re: virus scanner
Message-Id: <j2agqg$7su$1@news.albasani.net>
"Jürgen Exner" <jurgenex@hotmail.com> wrote in message
news:bvdh47llch2ri241onipe8fn2bgtigqect@4ax.com...
> robin <r@thevoid1.net> wrote:
>>wondering, does anyone know, how can you use perl to make a virus
>>scanner to check for files that contain viruses and such?
>
> Maybe reading
> perldoc File::Find
> perldoc -f open
> would be a start.
>
> jue
plus a database
www.clamAV.net is a good start
John
------------------------------
Date: Sun, 14 Aug 2011 23:33:03 -0600
From: robin <r@thevoid1.net>
Subject: Re: which is faster ?
Message-Id: <j2ab34$aa$1@speranza.aioe.org>
On 04-Aug-2011 3:30 PM, George Mpouras wrote:
> $#array
> scalar @array or
> my $n = @array ?
I assume with strict the my one with work faster, I think the strict
pragma makes it faster perl.
-r
------------------------------
Date: Sun, 14 Aug 2011 23:08:27 -0700
From: Jürgen Exner <jurgenex@hotmail.com>
Subject: Re: which is faster ?
Message-Id: <qndh47tqlvacfqn1qf9f0ol11qjh0bho61@4ax.com>
robin <r@thevoid1.net> wrote:
>On 04-Aug-2011 3:30 PM, George Mpouras wrote:
>> $#array
>> scalar @array or
>> my $n = @array ?
>I assume with strict the my one with work faster, I think the strict
>pragma makes it faster perl.
Your statement can be interpreted in two ways:
- I assume with strict the my one with work faster than the other two
options shown
- I assume with strict the my one with work faster than without using
strict
Which one is it?
jue
------------------------------
Date: Mon, 15 Aug 2011 13:29:07 +0100
From: Rainer Weikusat <rweikusat@mssgmbh.com>
Subject: Re: which is faster ?
Message-Id: <87ty9i97u4.fsf@sapphire.mobileactivedefense.com>
robin <r@thevoid1.net> writes:
> On 04-Aug-2011 3:30 PM, George Mpouras wrote:
>> $#array
>> scalar @array or
>> my $n = @array ?
> I assume with strict the my one with work faster, I think the strict
> pragma makes it faster perl.
According to the corresponding documentation, access to 'my' variables
should be faster than acceses to 'other variables' and I expect this
to be actually true because a variable declared with my reside in a
scope-specific array and are accessed by array index while 'package
globals' require a hash lookup in the symbol table hash of the package
they belong to. But that's not at all related to 'strict' which
reconfigures the Perl compile by modifying the variable $^H and has no
runtime effects. (AFAIK).
------------------------------
Date: Mon, 15 Aug 2011 13:54:47 -0500
From: Tad McClellan <tadmc@seesig.invalid>
Subject: Re: which is faster ?
Message-Id: <slrnj4iqdb.8cv.tadmc@tadbox.sbcglobal.net>
robin <r@thevoid1.net> wrote:
> I think the strict
> pragma makes it faster perl.
Your thinking is not correct.
Why are we not surprised?
--
Tad McClellan
email: perl -le "print scalar reverse qq/moc.liamg\100cm.j.dat/"
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.
------------------------------
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>
Administrivia:
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Back issues are available via anonymous ftp from
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------------------------------
End of Perl-Users Digest V11 Issue 3473
***************************************
