[31216] in Perl-Users-Digest
Perl-Users Digest, Issue: 2461 Volume: 11
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Fri Jun 5 16:09:45 2009
Date: Fri, 5 Jun 2009 13:09:08 -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 Fri, 5 Jun 2009 Volume: 11 Number: 2461
Today's topics:
Re: $#{$h{$_}}, $#{@{$h{$_}}}, $#@{$h{$_}} (Randal L. Schwartz)
2.0GHz Intel Core 2 DUO Mobile T7200 667MHz Cache L2 4M <whatnextur@gmail.com>
Re: Applications <cwilbur@chromatico.net>
Re: FAQ 2.2 How can I get a binary version of perl? <jimsgibson@gmail.com>
Passing scalars to C functions <josef.moellers@ts.fujitsu.com>
Re: Passing scalars to C functions <ben@morrow.me.uk>
Posting Guidelines for comp.lang.perl.misc ($Revision: tadmc@seesig.invalid
Re: Tell me the Flintstones HoH has 22 things <1usa@llenroc.ude.invalid>
Re: Tell me the Flintstones HoH has 22 things <yankeeinexile@gmail.com>
Re: Tell me the Flintstones HoH has 22 things <uri@StemSystems.com>
Re: Tell me the Flintstones HoH has 22 things <yankeeinexile@gmail.com>
Re: Tell me the Flintstones HoH has 22 things <derykus@gmail.com>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Fri, 05 Jun 2009 08:05:30 -0700
From: merlyn@stonehenge.com (Randal L. Schwartz)
Subject: Re: $#{$h{$_}}, $#{@{$h{$_}}}, $#@{$h{$_}}
Message-Id: <86tz2un2kl.fsf@blue.stonehenge.com>
>>>>> "sln" == sln <sln@netherlands.com> writes:
sln> Not at all.
sln> $# @{ $h{$_} }
sln> $h{$_} if correct is a sclar reference to an array.
sln> @{} dereferences the context, assuming a ref to an array.
sln> $# now knows where to look to get the size.
Wrong. You want $#{$h{$_}}.
$#@{...} wouldn't be write because that would mean $#@foo as the
non-reference equivalent, which is wrong. You want $#foo,
making that a reference is $#{...}.
The first rule we teach in the Alpaca class is to write whatever
you want like you never heard of references before, then replace
the name of the item with an expression contained in braces, and
that will be the dereferencing form.
print "Just another Perl hacker,"; # the original
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc.
See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion
------------------------------
Date: Fri, 5 Jun 2009 02:44:41 -0700 (PDT)
From: "whatnext@gmail.com" <whatnextur@gmail.com>
Subject: 2.0GHz Intel Core 2 DUO Mobile T7200 667MHz Cache L2 4MB LF80537GF0414M
Message-Id: <1d44daa7-1ca6-486e-9ef4-badce0973850@l28g2000vba.googlegroups.com>
Intel Centrino Duo mobile technology has just gotten a mobility
upgrade with the new Intel Core 2 Duo mobile processor. Its advanced
capabilities provide twice the multitasking performance while using 28
percent less power so you get the benefit of a powerful dual-core PC
plus all the benefits of mobility.
for more info http://www.intel-intel99.blogspot.com
------------------------------
Date: Fri, 05 Jun 2009 09:47:04 -0400
From: Charlton Wilbur <cwilbur@chromatico.net>
Subject: Re: Applications
Message-Id: <868wk6ztbb.fsf@mithril.chromatico.net>
>>>>> "EDG" == E D G <edgrsprj@ix.netcom.com> writes:
EDG> "Charlton Wilbur" <cwilbur@chromatico.net> wrote in message
EDG> news:86fxefzuhf.fsf@mithril.chromatico.net...
>> This is irrelevant to your question.
EDG> Thanks for the comments. Once again, the programming
EDG> philosophy is somewhat different for the questions I am asking
EDG> than for probably most of the questions other people are
EDG> asking.
Your programming philosophy is completely irrelevant to every question
you've yet asked. And by the time you've finished explaining your
programming philosophy, the mission statement for your project, and the
reasons everyone should help you, most sane people have skipped ahead to
the next article.
Did you read "How to Ask Questions the Smart Way"?
http://catb.org/esr/faqs/smart-questions.html
If you preface your question with three screens full of information that
is *completely irrelevant* to the problem you're having and the question
you're asking, people will skip over it.
EDG> To a large extent, the programs I am developing are designed to
EDG> simply show various organizations that a certain type of
EDG> application will work and what it can accomplish. If they like
EDG> the application then they can have their own programmers
EDG> duplicate and expand it using Perl if they like, or whatever
EDG> other language they prefer. I expect that in most cases it
EDG> would be one of the C family languages.
If this becomes an issue, you can say "This is a prototype and doesn't
have to have perfect code." Of course, experienced software developers
will find that amusing, because many of us have worked on "prototype"
systems that are older than we are.
Charlton
--
Charlton Wilbur
cwilbur@chromatico.net
------------------------------
Date: Fri, 05 Jun 2009 12:56:27 -0700
From: Jim Gibson <jimsgibson@gmail.com>
Subject: Re: FAQ 2.2 How can I get a binary version of perl?
Message-Id: <050620091256276990%jimsgibson@gmail.com>
In article <5o6of6-q39.ln1@blue.stonehenge.com>, PerlFAQ Server
<brian@stonehenge.com> wrote:
> This is an excerpt from the latest version perlfaq2.pod, which
> comes with the standard Perl distribution. These postings aim to
> reduce the number of repeated questions as well as allow the community
> to review and update the answers. The latest version of the complete
> perlfaq is at http://faq.perl.org .
>
> --------------------------------------------------------------------
>
> 2.2: How can I get a binary version of perl?
>
> (contributed by brian d foy)
>
> ActiveState: Windows, Linux, Mac OS X, Solaris, AIX and HP-UX
>
> http://www.activestate.com/
>
> Sunfreeware.com: Solaris 2.5 to Solaris 10 (SPARC and x86)
>
> http://www.sunfreeware.com/
>
> Strawberry Perl: Windows, Perl 5.8.8 and 5.10.0
>
> http://www.strawberryperl.com
What about IndigoPerl for Windows? I haven't used it, but some people
here recommend it.
<http://www.indigostar.com/indigoperl.htm>
They also offer a free, bundled version of Perl, Apache (with
mod_perl), MySQL, and PHP:
<http://www.indigostar.com/indigoampp.html>
Seems like worth a mention.
--
Jim Gibson
------------------------------
Date: Fri, 05 Jun 2009 13:16:25 +0200
From: Josef Moellers <josef.moellers@ts.fujitsu.com>
Subject: Passing scalars to C functions
Message-Id: <h0auq9$6jk$1@nntp.fujitsu-siemens.com>
I'm fairly new to the XS business. I have managed to get the skeleton up
(h2xs) and have also managed to write short functions that have ints as
arguments and return strings, but I'd like to pass a full Perl scalar
(my $cdb = pack('C*', 0x12, 0, 0, 0, 128, 0);) and retrieve the length
(6) and the bytes themselves in the C function and also return such a
scalar.
How do I do that?
Thanks,
Josef
--
These are my personal views and not those of Fujitsu Technology Solutions!
Josef Möllers (Pinguinpfleger bei FTS)
If failure had no penalty success would not be a prize (T. Pratchett)
Company Details: http://de.ts.fujitsu.com/imprint.html
------------------------------
Date: Fri, 5 Jun 2009 13:56:54 +0100
From: Ben Morrow <ben@morrow.me.uk>
Subject: Re: Passing scalars to C functions
Message-Id: <m9hnf6-dk1.ln1@osiris.mauzo.dyndns.org>
Quoth Josef Moellers <josef.moellers@ts.fujitsu.com>:
> I'm fairly new to the XS business. I have managed to get the skeleton up
> (h2xs) and have also managed to write short functions that have ints as
> arguments and return strings, but I'd like to pass a full Perl scalar
> (my $cdb = pack('C*', 0x12, 0, 0, 0, 128, 0);) and retrieve the length
> (6) and the bytes themselves in the C function and also return such a
> scalar.
>
> How do I do that?
MODULE = My::XS PACKAGE = My::XS
SV *
my_xs_func(sv)
SV *sv
PREINIT:
const char *bytes;
STRLEN len;
CODE:
bytes = SvPV(sv, len);
RETVAL = sv_2mortal(newSVpvn(bytes, len));
OUTPUT:
RETVAL
Of course, there are lots of other ways, this being Perl. See perlxs for
the details.
Ben
------------------------------
Date: Fri, 05 Jun 2009 07:10:55 GMT
From: tadmc@seesig.invalid
Subject: Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
Message-Id: <3y3Wl.28140$c45.4210@nlpi065.nbdc.sbc.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.noitatibaher\100cmdat/"
------------------------------
Date: Fri, 05 Jun 2009 12:23:32 GMT
From: "A. Sinan Unur" <1usa@llenroc.ude.invalid>
Subject: Re: Tell me the Flintstones HoH has 22 things
Message-Id: <Xns9C21555F1C18Dasu1cornelledu@127.0.0.1>
jidanni@jidanni.org wrote in news:874ouvs5h9.fsf@jidanni.org:
> Regarding this hash of hashes on
> $ man perldsc
> %HoH = (
> flintstones => {
> lead => "fred",
> pal => "barney",
> },
> jetsons => {
> lead => "george",
> wife => "jane",
> "his boy" => "elroy",
> },
> simpsons => {
> lead => "homer",
> wife => "marge",
> kid => "bart",
> },
> );
>
> What command will tell me what I want to know: that there are 22
> things inside it?
'Things' is not a useful concept..
There are three TV series in %HoH. Information for each TV series is
held in a corresponding hash reference. Between them, there are eight
roles in those three series. Each role has the name of the character
which is unique within series not necessarily unique across series
(nothing prevents you from adding an uncle john to all series or a role
friend with a name that differs across series or a character called anne
for a different role for each series).
Sinan
--
A. Sinan Unur <1usa@llenroc.ude.invalid>
(remove .invalid and reverse each component for email address)
comp.lang.perl.misc guidelines on the WWW:
http://www.rehabitation.com/clpmisc/
------------------------------
Date: Fri, 05 Jun 2009 09:44:39 -0500
From: Lawrence Statton <yankeeinexile@gmail.com>
Subject: Re: Tell me the Flintstones HoH has 22 things
Message-Id: <m17hzqwxig.fsf@mac.gateway.2wire.net>
"Uri Guttman" <uri@StemSystems.com> writes:
> LS> How you came to 22 is a bogglement ....
>
> there are 3 top level keys (or 6 things counting keys and values) and
> then 8 second level keys (16 more things) for a total of 22. yes, it is
> a very odd and useless number. and it is easily derived by counting keys
> recursively and doubling that value. what use this has is beyond me.
>
> uri
I was being disingenuous -- I was able to figure out what there were 22
of ... The part that is still a bogglement is why does OP consider a key
and its associated value separate "things" , and - as you pointed out -
what possible meaning could that number have? I did head over to google
and search OP's posting history, and I think he's just antisocial and
trollish.
--L
------------------------------
Date: Fri, 05 Jun 2009 11:44:12 -0400
From: "Uri Guttman" <uri@StemSystems.com>
Subject: Re: Tell me the Flintstones HoH has 22 things
Message-Id: <874ouuheib.fsf@quad.sysarch.com>
>>>>> "LS" == Lawrence Statton <yankeeinexile@gmail.com> writes:
LS> "Uri Guttman" <uri@StemSystems.com> writes:
LS> How you came to 22 is a bogglement ....
>>
>> there are 3 top level keys (or 6 things counting keys and values) and
>> then 8 second level keys (16 more things) for a total of 22. yes, it is
>> a very odd and useless number. and it is easily derived by counting keys
>> recursively and doubling that value. what use this has is beyond me.
>>
>> uri
LS> I was being disingenuous -- I was able to figure out what there were 22
LS> of ... The part that is still a bogglement is why does OP consider a key
LS> and its associated value separate "things" , and - as you pointed out -
LS> what possible meaning could that number have? I did head over to google
LS> and search OP's posting history, and I think he's just antisocial and
LS> trollish.
sounds good to me. and scanning a tree is basic data structure coding
that is never a builtin in any lang i have heard of as it is way too
high level. let alone counting 'things' in the tree being a perl
builtin.
uri
--
Uri Guttman ------ uri@stemsystems.com -------- http://www.sysarch.com --
----- Perl Code Review , Architecture, Development, Training, Support ------
--------- Free Perl Training --- http://perlhunter.com/college.html ---------
--------- Gourmet Hot Cocoa Mix ---- http://bestfriendscocoa.com ---------
------------------------------
Date: Fri, 05 Jun 2009 11:21:12 -0500
From: Lawrence Statton <yankeeinexile@gmail.com>
Subject: Re: Tell me the Flintstones HoH has 22 things
Message-Id: <m13aaewt1j.fsf@mac.gateway.2wire.net>
"Uri Guttman" <uri@StemSystems.com> writes:
> let alone counting 'things' in the tree being a perl builtin.
>
Agreed -- I came away with a distinct feeling of "WAHHHHHHHHHHHHHH!
Perl is the sux0r! it doesn't solve some imaginary problem I've just
made up! You all suck. I'm going to go write all my code in
interpreted object-oriented COBOL!"
--L
------------------------------
Date: Fri, 5 Jun 2009 11:42:50 -0700 (PDT)
From: Anonymous <derykus@gmail.com>
Subject: Re: Tell me the Flintstones HoH has 22 things
Message-Id: <91d30f62-19be-4a2b-9212-b99892a7e05e@p4g2000vba.googlegroups.com>
On Jun 4, 9:16=A0pm, Keith Keller <kkeller-use...@wombat.san-
francisco.ca.us> wrote:
> On 2009-06-05, jida...@jidanni.org <jida...@jidanni.org> wrote:
>
>
> ...
> > What command will tell me what I want to know: that there are 22 things
> > inside it? The following docs didn't help. Does one really need to writ=
e
> > a recursive program to finally get a "22"? I'm willing to take 19 for a=
n
> > answer too, but not 3, or "2/8".
>
> Yes, you really need to recurse down the structure. =A0It's probable that
> something like this exists in CPAN already, though. =A0You might try
> using Data::Walk:
>
> http://search.cpan.org/~guido/Data-Walk-1.00/lib/Data/Walk.pm
>
Easy File::Find-like interface too:
use Data::Walk;
...
my $count =3D 0;
walkdepth( sub {$count++;}, %HoH );
print "count=3D$count\m";
--
Charles DeRykus
------------------------------
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:
#The Perl-Users Digest is a retransmission of the USENET newsgroup
#comp.lang.perl.misc. For subscription or unsubscription requests, send
#the single line:
#
# subscribe perl-users
#or:
# unsubscribe perl-users
#
#to almanac@ruby.oce.orst.edu.
NOTE: due to the current flood of worm email banging on ruby, the smtp
server on ruby has been shut off until further notice.
To submit articles to comp.lang.perl.announce, send your article to
clpa@perl.com.
#To request back copies (available for a week or so), send your request
#to almanac@ruby.oce.orst.edu with the command "send perl-users x.y",
#where x is the volume number and y is the issue number.
#For other requests pertaining to the digest, send mail to
#perl-users-request@ruby.oce.orst.edu. Do not waste your time or mine
#sending perl questions to the -request address, I don't have time to
#answer them even if I did know the answer.
------------------------------
End of Perl-Users Digest V11 Issue 2461
***************************************
