[25343] in Perl-Users-Digest
Perl-Users Digest, Issue: 7588 Volume: 10
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Tue Dec 28 21:05:44 2004
Date: Tue, 28 Dec 2004 18:05:11 -0800 (PST)
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, 28 Dec 2004 Volume: 10 Number: 7588
Today's topics:
Re: getting array elements <nospam@nospam.com>
Re: handle multiple submit button. <eighner@io.com>
Re: handle multiple submit button. <matthew.garrish@sympatico.ca>
Re: handle multiple submit button. <matthew.garrish@sympatico.ca>
Re: help: negative lookahead and backref in regex? (Anno Siegel)
Re: help: negative lookahead and backref in regex? <noreply@gunnar.cc>
Re: help: negative lookahead and backref in regex? <stenor@bayarea.net>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Tue, 28 Dec 2004 18:34:58 -0500
From: "daniel kaplan" <nospam@nospam.com>
Subject: Re: getting array elements
Message-Id: <1104276874.394728@nntp.acecape.com>
"Chris Mattern" <matternc@comcast.net> wrote in message
news:z6GdncN3PK36fkzcRVn-sQ@comcast.com...
> daniel kaplan wrote:
>
>
> For someone who's not even going to bother, you surely seem
> determined to have the last world.
the world? absolutely, i do want the world. as for the last word, more of
just an auto-response.
please note, not poking fun of your typing....my typing skill's, or lack
thereof, were legendary here within days....just trying to lighten the mood
;-)
daniel
------------------------------
Date: Tue, 28 Dec 2004 17:32:54 -0600
From: Lars Eighner <eighner@io.com>
Subject: Re: handle multiple submit button.
Message-Id: <slrnct3r3u.21t6.eighner@goodwill.io.com>
In our last episode,
<1104263134.939281.93240@z14g2000cwz.googlegroups.com>,
the lovely and talented ioneabu@yahoo.com
broadcast on comp.lang.perl.misc:
> Lars Eighner wrote:
> ...
>> Third perl is not CGI.
> Just look at the Larry Wall home page to see that this is true. On the
> other hand, I have found CGI programming via CGI.pm is the best user
> interface to Perl programs.
As it happens, I was working on the README for my small
databases manager (to use a number of databases similar to and
including various old DOS-type databases, spreadsheets, and
various "office suite" type applications -- no, it is not nearly
done, but I tend to document as I go because I am too senile to
remember what I did yesterday if I haven't documented) and I was
trying to explain (in the README) why a cgi interface for a
program that is *not* intended for a public server on the
world-wide web.
You see, there just is no trick to programming. It is easy.
And anyone with a computer should give it a try. The trick -
what the professionals get paid for - is making programs run on
many different computers, with many different OSs, i/o devices,
etc. That stuff is really, really hard - and there are dozens,
even hundreds, of vendors out there trying all the time to
produce new hardware to break your application.
But html forms have a fairly complete toolkit for data input,
html has an adequate way of marking up output, and most browsers
do a pretty good job of presenting html documents - particularly
if you give them a chance to do their jobs instead of trying to
throttle them into absolute presentational subservience (and if
you trust users to configure their browsers in a way that is
most comfortable for them).
CGI takes care of the nasty stuff so even an idiot can write
programs that do useful things. There ought to be a word for
not-necessarily-for-the-web cgi programming.
Here's a hint, even if you have a local server, lynx - compiled
and configured for lynxcgi if it is available for your platform
- is a really helpful tool for working on these kinds of
applications.
I'd be happy to know of other browsers that have some scheme for
running cgi without a server (not that it is brain surgery - the
browser just has to provide a - usually - minimal environment,
launch the script, and catch and render the output). I run a
server locally, and at some point I move applications to it for
testing. But at the still-sort-of-vague-on-things level,
browser cgi is great. And for personal-type applications,
browser cgi might be the best solution.
> It is very simple, even easier than actually fully
> understanding HTML and CGI programming without CGI.pm, and it
> is as portable as you can get. No virtual machine to install,
> just an up-to-date browser on just about any current OS
> (assuming you have access to one of the many low cost web
> hosters). A google search for 'CGI.pm home page' brings up
> the official home page with everything you need to know about
> CGI.pm. I bought the books anyway because I felt that Dr.
> Lincoln Stein is a great man and deserves all the book sales
> he can get. I wonder why he doesn't publish with O'Reilly. I
> don't know much about the inner-circle of Perl, but his CGI.pm
> work is discussed in every O'Reilly Perl book that I have
> read, so why is he with a different publisher?
> Anyway, if you want to really have fun programming, immerse yourself in
> CGI programming with Perl. I can't get enough of it.
--
Lars Eighner eighner@io.com http://www.io.com/~eighner/
War On Terrorism: Joe McCarthy Brigade
"The decadent left in its enclaves on the coasts is not dead -- and may well
mount a fifth column." Andrew Sullivan, _The New Republic_
------------------------------
Date: Tue, 28 Dec 2004 20:19:42 -0500
From: "Matt Garrish" <matthew.garrish@sympatico.ca>
Subject: Re: handle multiple submit button.
Message-Id: <LCnAd.21418$nV.652604@news20.bellglobal.com>
"Michele Dondi" <bik.mido@tiscalinet.it> wrote in message
news:sgl2t0tulace9agdtu663dk62jan9blc16@4ax.com...
> On Tue, 28 Dec 2004 11:33:56 +0100, Gunnar Hjalmarsson
> <noreply@gunnar.cc> wrote:
>
>>> My pervious post
>>
>>Which previous post?
>
> Pay attention: he never said "previous post"...
> ;-)
>
>
And unlike some newbies, he admits he's open to new ideas. I prefer pervious
posters to impervious ones...
Matt
------------------------------
Date: Tue, 28 Dec 2004 20:28:53 -0500
From: "Matt Garrish" <matthew.garrish@sympatico.ca>
Subject: Re: handle multiple submit button.
Message-Id: <mLnAd.21512$nV.654625@news20.bellglobal.com>
"Abigail" <abigail@abigail.nl> wrote in message
news:slrnct3gr5.non.abigail@alexandra.abigail.nl...
> ioneabu@yahoo.com (ioneabu@yahoo.com) wrote on MMMMCXXXVII September
> MCMXCIII in
> <URL:news:1104263134.939281.93240@z14g2000cwz.googlegroups.com>:
> ''
> '' Lars Eighner wrote:
> '' ...
> '' > Third perl is not CGI.
> ''
> '' Just look at the Larry Wall home page to see that this is true. On
> the
> '' other hand, I have found CGI programming via CGI.pm is the best user
> '' interface to Perl programs. It is very simple, even easier than
> '' actually fully understanding HTML and CGI programming without CGI.pm,
> '' and it is as portable as you can get. No virtual machine to install,
> '' just an up-to-date browser on just about any current OS (assuming you
> '' have access to one of the many low cost web hosters). A google search
> '' for 'CGI.pm home page' brings up the official home page with
> everything
> '' you need to know about CGI.pm. I bought the books anyway because I
> '' felt that Dr. Lincoln Stein is a great man and deserves all the book
> '' sales he can get. I wonder why he doesn't publish with O'Reilly. I
> '' don't know much about the inner-circle of Perl, but his CGI.pm work is
> '' discussed in every O'Reilly Perl book that I have read, so why is he
> '' with a different publisher?
>
> + Perhaps because not everyone is convinced O'Reilly is the best publisher
> under the sun?
>
And judging a book by its publisher is such a bad idea. I'd rather get a
Conway book on Perl published by Manning or a Stein book by Addison-Wesley
than an O'Reilly book by some unknown...
Matt
------------------------------
Date: 29 Dec 2004 00:13:57 GMT
From: anno4000@lublin.zrz.tu-berlin.de (Anno Siegel)
Subject: Re: help: negative lookahead and backref in regex?
Message-Id: <cqsss5$2f9$1@mamenchi.zrz.TU-Berlin.DE>
<stenor@bayarea.net> wrote in comp.lang.perl.misc:
> I'd appreciate some help from a regex guru with this:
>
> I'm trying to match a pattern that looks more or less like this:
>
> <string1><statictext><string2>
>
> where string1 and string2 are not the same. I need to do this in a
> single regex (rather than capturing $1 and $2 and comparing after the
> fact.
>
> I've tried this as a test (in this case <statictext> is just
> whitespace:
>
> /(\w+)\s+(?!\1)/
>
> This will match "foo bar" as expected, but it also matches "foo foo"
> which it ought not to.
It matches "oo", followed by a blank, followed by something that is not
"oo" (namely "foo"), as it ought to. You may want to anchor the pattern,
or use "\b" boundaries around parts.
Anno
------------------------------
Date: Wed, 29 Dec 2004 00:59:49 +0100
From: Gunnar Hjalmarsson <noreply@gunnar.cc>
Subject: Re: help: negative lookahead and backref in regex?
Message-Id: <41D1F375.3010203@gunnar.cc>
stenor@bayarea.net wrote:
> I'm trying to match a pattern that looks more or less like this:
>
> <string1><statictext><string2>
>
> where string1 and string2 are not the same. I need to do this in a
> single regex (rather than capturing $1 and $2 and comparing after the
> fact.
>
> I've tried this as a test (in this case <statictext> is just
> whitespace:
>
> /(\w+)\s+(?!\1)/
>
> This will match "foo bar" as expected, but it also matches "foo foo"
> which it ought not to.
No, it doesn't. It matches "oo foo", which it ought to. ;-) Did you try
to print the $1 variable?
<snip>
> Any ideas regarding why using the negative lookahead assertion as I've
> done doesn't do what I'd like it to do? And/or how to do it correctly?
Express yourself more clearly, by for instance adding a word boundary
character. This matches "foo bar" but not "foo foo":
/\b(\w+)\s+(?!\1)/
--
Gunnar Hjalmarsson
Email: http://www.gunnar.cc/cgi-bin/contact.pl
------------------------------
Date: Tue, 28 Dec 2004 17:20:19 -0800
From: Scott Panzer <stenor@bayarea.net>
Subject: Re: help: negative lookahead and backref in regex?
Message-Id: <Pine.NEB.4.58.0412281716250.4215@baygate.bayarea.net>
Thanks Gunnar, this is very helpful.
On Wed, 29 Dec 2004, Gunnar Hjalmarsson wrote:
> stenor@bayarea.net wrote:
> > I'm trying to match a pattern that looks more or less like this:
> >
> > <string1><statictext><string2>
> >
> > where string1 and string2 are not the same. I need to do this in a
> > single regex (rather than capturing $1 and $2 and comparing after the
> > fact.
> >
> > I've tried this as a test (in this case <statictext> is just
> > whitespace:
> >
> > /(\w+)\s+(?!\1)/
> >
> > This will match "foo bar" as expected, but it also matches "foo foo"
> > which it ought not to.
>
> No, it doesn't. It matches "oo foo", which it ought to. ;-) Did you try
> to print the $1 variable?
>
> <snip>
>
> > Any ideas regarding why using the negative lookahead assertion as I've
> > done doesn't do what I'd like it to do? And/or how to do it correctly?
>
> Express yourself more clearly, by for instance adding a word boundary
> character. This matches "foo bar" but not "foo foo":
>
> /\b(\w+)\s+(?!\1)/
>
> --
> Gunnar Hjalmarsson
> Email: http://www.gunnar.cc/cgi-bin/contact.pl
>
--------------------------------------------------------------------
Scott Panzer http://www.bayarea.net/~stenor Sunnyvale, CA
PGP public keys found available at my web site
--------------------------------------------------------------------
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
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Subject: Digest Administrivia (Last modified: 6 Apr 01)
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End of Perl-Users Digest V10 Issue 7588
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