I am just learning perl and have been doing some of the exercises in the
llama book.
I was doing page exercise one from page 57 and I was pulling out my hair
as to why it was not working and then I did something experimental and
got it to work. But to be honest I have no idea why it works.
I wil
At the suggestion of a few people I've converted the
program into text files to make things easier for
reviewers. Here are the four files:
http://www.redsquirreldesign.com/soapbox/Soapbox.pm.txt
http://www.redsquirreldesign.com/soapbox/main.txt
http://www.redsquirreldesign.com/soapbox/soap.txt
h
On Jun 29, Timothy said:
>I'm sure this is a really easy question but here goes. I'd like to replace
>each leading blank of a string with I have currently:
>
> $strLine =~ s/^\s+/ /g;
That /g is pointless there...
>I can see that this will simply take all leading blanks and repl
I'm sure this is a really easy question but here goes. I'd like to replace
each leading blank of a string with I have currently:
$strLine =~ s/^\s+/ /g;
I can see that this will simply take all leading blanks and replace them
with one but how do I get *each* leading blank to
On Fri, Jun 29, 2001 at 10:21:31AM +1000, Sam Lander wrote:
> I wanted to do this just today. Although, I want to tidy up the resulting
> line a bit by deleting everything before a colon, so I tried this:
>perl -ne "/string/ && print s/.*://" file
> I was surprised that I got this:
>1
Hello,
You can do it in one line like:
my $str = 'DimView 1 "All" DimView 2 "Some" DimView 3 "Most" DimView 4 "None"';
%hash = $str =~ /DimView\s+(\d+)\s+("[^"]*")\s+/g;
print "$_ $hash{$_}\n" for keys %hash;
Aziz,,,
On Thu, 28 Jun 2001 16:32:28 -0400, Seitz, Scott said:
> I'm having
I don't think you want to use split.. at least I wouldn't. I would do:
my %foo = ();
my $line = 'DimView 1 "All" DimView 2 "Some" DimView 3 "Most" DimView 4
"None"';
$foo{$1} = $2 while $line =~ m/DimView (\d) "([^"]+)"/g;
That gives me %foo as (according to Data::Dumper):
{
One more note for beginners (like myself) buying Perl books -
The Perl CD Bookshelf is $71.96 (USD) at Amazon and $47.97 (USD) at
FatBrain.com. Shop around.
(I have any no financial ties to FatBrain just looking to help the end user)
-Original Message-
From: Stout, Joel R [mailto:[
On Sat, Jun 30, 2001 at 12:28:11AM +0200, M.W. Koskamp wrote:
> From: Wang, Lanbo <[EMAIL PROTECTED]>
> > Hi Members,
> > #!/usr/local/bin/perl
> >
> > sub card{
> >
> > my %card_map;
> > my ($num)=@_;
> > @card_map{1..9}= qw(one two three four five six seven eight nine);
>
> You are putting
On Fri, Jun 29, 2001 at 06:04:33PM -0400, Wang, Lanbo wrote:
> #!/usr/local/bin/perl
This is your first mistake. You forgot -w and use strict; always use both
when debugging code. It wouldn't have helped you here, but I guarantee you
it will in the future. So:
#!/usr/local/bin/perl -w
us
Learning languages by reverse engineering does not work for most people.
Try Learning Perl and the Perl Cookbook for starters. Also go to
http://learn.perl.org/
Cheers,
Joel
-Original Message-
From: Jerry Preston [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 29, 2001 12:16 PM
To: Sco
--- Me <[EMAIL PROTECTED]> wrote:
> > > my ($num) = @_;
> > >
> > > puts the length of @_ in $num.
I don't think so?
The parens should give $num a list context.
It should have the first value in @_.
Right?
__
Do You Yahoo!?
Get personaliz
> while (<>) {
>chomp;
>print "card of $_ is:" &card($_), "\n";
> }
^
Add a comma (,) or a string cat (.) between the quote and the function :-)
Aziz,,,
On Fri, 29 Jun 2001 18:04:33 -0400, Wang, Lanbo said:
> Hi Members,
>
> It seemed that a value
> > I would think you are always getting 'one', right?
> >
> > That's because:
> >
> > my ($num) = @_;
> >
> > puts the length of @_ in $num.
Sorry, I'm being an idiot. You were doing the right thing.
> $ more number
> 3
> 5
> $test10.pl < number
> ``rd
> bard
Hmm.
> print "card of $
On Fri, 29 Jun 2001, M.W. Koskamp wrote:
> > my $option = @ARGV ? shift : ;
>
> Above option only works for 1 parameter tho (and commandline arguments).
> For function calls i like to use 'named parameters' by accepting a hash of
> options.
Well, yeah, but the topic *was* command-line arguments
--- "Seitz, Scott" <[EMAIL PROTECTED]> wrote:
> I'm having trouble with what I think is a very simple split question.
>
> I've got a line of text something like:
>
> DimView 1 "All" DimView 2 "Some" DimView 3 "Most" DimView 4 "None"
>
> I want a hash with (1, "All", 2, "Some", 3, "Most", 4, "N
> > sub card{
> >
> > my %card_map;
> > my ($num)=@_;
> > @card_map{1..9}= qw(one two three four five six seven eight nine);
>
> You are putting the numbers 0..9 in the array @card_map here, not in
the
> hash %cardmap.
No he isn't. (He's using a hash slice, which is fine.)
I would think you
On Thu, 28 Jun 2001, Seitz, Scott wrote:
> I'm having trouble with what I think is a very simple split question.
>
> I've got a line of text something like:
>
> DimView 1 "All" DimView 2 "Some" DimView 3 "Most" DimView 4 "None"
>
> I want a hash with (1, "All", 2, "Some", 3, "Most", 4, "None")
>
Well, the reason it's not working is that there is only one Dimview between
pairs, for a hash you need seperators between all elements. Here's a way to
do it, although I bet others can come up with a quicker/more efficient way:
my (%hash);
$_ = 'DimView 1 "All" DimView 2 "Some" DimView 3 "Most"
- Original Message -
From: Wang, Lanbo <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, June 30, 2001 12:04 AM
Subject: Problem with hash value
> Hi Members,
>
> It seemed that a value was incorrectly retrieved from the hash list in the
> following small Perl script. .
>
> #!
At 10:21 AM 6/29/01 +1000, Sam Lander wrote:
> >> At a shell prompt / command line, enter:
> >>
> >> perl -ne '/string/ or print' file
> >>
> >> where string is the string and file is the file.
> >
> >I prefer 'print unless /string/'.
> >As if it matters. ;o]
>
>I wanted to do this just today.
Hi Members,
It seemed that a value was incorrectly retrieved from the hash list in the
following small Perl script. .
#!/usr/local/bin/perl
sub card{
my %card_map;
my ($num)=@_;
@card_map{1..9}= qw(one two three four five six seven eight nine);
if ($card_map{$num}) {
$card_map{$num
>> At a shell prompt / command line, enter:
>>
>> perl -ne '/string/ or print' file
>>
>> where string is the string and file is the file.
>
>I prefer 'print unless /string/'.
>As if it matters. ;o]
I wanted to do this just today. Although, I want to tidy up the resulting
line a bit by de
I'm having trouble with what I think is a very simple split question.
I've got a line of text something like:
DimView 1 "All" DimView 2 "Some" DimView 3 "Most" DimView 4 "None"
I want a hash with (1, "All", 2, "Some", 3, "Most", 4, "None")
I'm spitting on /DimView/, but I can't get the syntax
Hi, has anyone used the timeofday function in Time::Hires on Win32?
The reason I ask is that I am repeatedly getting and printing the microseconds:
@thetime = timeofday;
print $thetime[1];
The microseconds only have a millisecond componant, so they are of the range 00 to
999000 (the
:also, there's a chapter on Web Automation in the
:Perl Cookbook.
That's true... _The Perl Cookbook_, chapter 20. Excellent resource.
If you don't have it, I would recommend getting it.
20.1 - Fetching a URL from a Perl script
20.2 - Automating Form Submission
2
> > my $option = defined $ARGV[0] ? $ARGV[0] : "default";
>
> Didn't we already go through all of this a few hours ago? Randal (of
> course) came up with the most succint solution:
>
> my $option = @ARGV ? shift : ;
>
Sorry for trying to be helpful.
Mailing list arent represented in threads in ou
you could just do
print `cat file.html` if (condition);
On Fri, 29 Jun 2001, Mike Truong wrote:
> Is there any way to open a HTM page from the Perl program? When the script runs, it
>opens the page after some conditions were checked.
>
> Thanks in advance for you help.
>
Hi,
I have been something similar lately to what u want to do. Browsing thru
webpages.filing out formsfollowing links on a page etc.
LWP::UserAgent and HTTP::Request can be used to do that. I would suggest you
take a look at "Web Client Programming with Perl by Clinton Wong - QReill
On Fri, 29 Jun 2001, M.W. Koskamp wrote:
> > > my $option = $ARGV[0] || 1;
> >
> > And what if $ARGV[0] equal to 0 ? Ops ..
> >
> > Remember what evaluates to FALSE :
> > * "0"
> > * 0
> > * empty string
> > * undef
>
> my $option = defined $ARGV[0] ? $ARGV[0] : "default";
Didn't we already go t
- Original Message -
From: Evgeny Goldin (aka Genie) <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: Brett W. McCoy <[EMAIL PROTECTED]>
Sent: Friday, June 29, 2001 11:34 PM
Subject: Re: Optional Variables
>
> > my $option = $ARGV[0] || 1;
>
> And what if $ARGV[0] equal to 0 ? Ops ..
Craig, you are wanting to write a script that goes out and surfs the
internet like a user would, right? Or are you wanting to actually write
html documents with your script?
If you are wanting the former, LWP is the best way to go, in my
opinion. HTTP::Request::Common provides a
CGI.pm can also create forms. And to have the pages pre-filled in, just
use $q->textfield('my value for this particular element') set and it
will be prefilled in. (all of the rest of the form elements would use
something like:
$q->checkbox_group(-values=>['Shampoo', 'Toothbrush', 'Potato
Salad']
> my $option = $ARGV[0] || 1;
And what if $ARGV[0] equal to 0 ? Ops ..
Remember what evaluates to FALSE :
* "0"
* 0
* empty string
* undef
I took a look at the cgi.pm. It looks as though it deals with receiving
variables from forms, writing dynamic pages, etc.
Is this your impression? What I am looking to do, is fill out pages as if a
human(or something close) were doing it.
For example, visit http://www.yoursite.com
click on a pa
I took a look at the cgi.pm. It looks as though it deals with receiving
variables from forms, writing dynamic pages, etc.
Is this your impression? What I am looking to do, is fill out pages as if a
human(or something close) were doing it.
For example, visit http://www.yoursite.com
click on a pa
--- Bob Mangold <[EMAIL PROTECTED]> wrote:
> Within the loop, some other programs are executed and occasionally it
> may take a few minutes to complete everything and then continue. So
> I'm just throwing a little counter to STDOUT so I can monitor the
> progress, to ensure it doesn't get hung up
What would cause this format for the output file to result in the error
message "Format not terminated at end of line" :
format OUTPUTFORMAT =
@<<<,@<
,@<<< ,@<
$servicename,$filename
,$servi
Paul,
Within the loop, some other programs are executed and occasionally it may take
a few minutes to complete everything and then continue. So I'm just throwing a
little counter to STDOUT so I can monitor the progress, to ensure it doesn't
get hung up somewhere.
I knew of all the different ways
Pierre,
I'm working on such solution right now. Hit a dead-end with PerlMagick on
Win32, so this weekend I'll start over on Linux. Here's what I found:
Manipulate images (i.e.,crop)
http://www.eecs.umich.edu/~addi/perl/Imager/
ImageMagick - cut and manipulate images
http:
--- Bob Mangold <[EMAIL PROTECTED]> wrote:
> Is there a perl variable that automatically counts loop iterations.
> Such that I don't have to use '$count':
>
> foreach (@array){
> $count++;
> ..whatever..
> }
Lot's of people with suggestions, but I have a question --
what are you using $coun
--- Michael Fowler <[EMAIL PROTECTED]> wrote:
> > for my $i (0 .. $#foo) {
> > my $element = $foo[$i];
> > # ...
> > }
>
> or
>
> for (my $i = 0; $i < @foo; $i++) {
> ...
> }
>
> for (;;) isn't a bad word. :)
lol -- depends on where you were raised. ;o]
_
if your looping thru the elements of an array you can always just grab the #
of elements:
$elem = scalar(@array);
> > Is there a perl variable that automatically counts loop
> iterations. Such that I
> > don't have to use '$count':
> >
> > foreach (@array){
> > $count++;
> > ..whatever..
Scott,
I knew nothing when I started. I found a copy of a program and dug out every word
until it I understood it and the flow from top to bottom. I have
found this a good way to learn any language.
Jerry
Scott Dortch wrote:
>
> Where should I begin? I would like to get to know perl but
On Fri, Jun 29, 2001 at 02:58:20PM -0400, Jeff 'japhy' Pinyan wrote:
> No there is not. Either do:
>
> my $i = 0;
> for (@foo) {
> # ...
> }
> continue { $i++ }
>
> or do:
>
> for my $i (0 .. $#foo) {
> my $element = $foo[$i];
> # ...
> }
or
for (my $i = 0; $i < @
On Fri, 29 Jun 2001, Bob Mangold wrote:
> Is there a perl variable that automatically counts loop iterations. Such that I
> don't have to use '$count':
>
> foreach (@array){
> $count++;
> ..whatever..
> }
You can always do, if you need a loop variable:
foreach my $i (0..$#array) {
On Jun 29, Bob Mangold said:
>Is there a perl variable that automatically counts loop iterations. Such that I
>don't have to use '$count':
No there is not. Either do:
my $i = 0;
for (@foo) {
# ...
}
continue { $i++ }
or do:
for my $i (0 .. $#foo) {
my $element = $foo[$i];
Is there a perl variable that automatically counts loop iterations. Such that I
don't have to use '$count':
foreach (@array){
$count++;
..whatever..
}
?
Thanks,
Bob
__
Do You Yahoo!?
Get personalized email addresses from Yahoo! Mail
http:
Hi Brett,
The HTML page is a help book content. It contains other page links. The other page
links contain other pages. It was designed to run from /help/ directory.
The content page printed with your method contains other link pages in different
folder, when I click the other page link , the
Hal Wigoda [[EMAIL PROTECTED]] quoth:
*>I'm trying to install a module as root
*>from cpan
*>and it is looking for my ncftp program
*>and it is not found.
*>
*>What do i do now??
*>
*>I'm using mandrake 7.2 on my linux server.
Configure CPAN.pm to use ftp
elaine@chaos /home/chaos/elaine> perl -M
Hi there
Scuse any netiquette errors - I'm new to mailing lists so I'm a bit shaky on
the rules.
Use an external style sheet to hold your css information then all you need
to do is add the following line to your perl code in the head tags in the
html output
to put this into a perl context
pr
Also, the fact that this system is a protected system
means that there IS something worth protecting...
stealing.
Further reason not to run any cgi as root.
Bill Pierson <[EMAIL PROTECTED]> wrote:
> Thanks for your replies. Actually, I'd like to be
able to modify system
> config file
Here's a suggestion.
When you receive data from a form, the cgi that
parses this data should run as an ordinary user. The
process will act as a buffer, cleaning data, looking
for invalid values, and other oddities. Then when
all concerns are satisfied, the data is written to
disk to be p
>
> sorry about the terse code snippet
no problem, it is good code :-)
>
> Basically, I have an SSH tunnel that is controlled by another
> process and I want to tell when that ssh tunnel is closed.
Have you or R U looking into or using IO::Socket::SSL ??
There might be a method in there
CGI.pm is the most advanced module around for dealing with forms.
At 13:44 29.06.2001 -0400, Craig S Monroe wrote:
>All,
>
>I have done some searching, looking for a module for interacting with web
>pages.
>The only module, that appears to be related is LWP. I read through those
>docs,
>and, I
On Fri, Jun 29, 2001 at 12:10:04PM -0500, Hal Wigoda wrote:
> I'm trying to install a module as root
> from cpan
> and it is looking for my ncftp program
> and it is not found.
>
> What do i do now??
>
> I'm using mandrake 7.2 on my linux server.
You can install ncftp from your mandrake CDs, or
Scott, I have read a couple of books. It depends on your background.
I have a highly technical background, but knew zero about programming.
I started with Perl for dummies, and then purchased Learning Perl.
I found that a good transition for me, but you may be able to jump right.
Craig
[EMAI
On 29 Jun 2001 13:01:08 -0400, Mike Truong wrote:
> Is there any way to open a HTM page from the Perl program?
> When the script runs, it opens the page after some conditions
> were checked.
>
> Thanks in advance for you help.
By "open" do you mean open in some other application or open for
re
On Fri, Jun 29, 2001 at 12:14:23AM -0400, Richard J. Barbalace wrote:
> I don't really want to export the variables; I'm not modifying them in
> the parent package, just copying and expanding them in the inheriting
> package.
Well then, you are copying and modifying as simply as it can be done.
Where should I begin? I would like to get to know perl but do not know
where to start. Are there recommended books/websites etc. for in depth
documentation?
Any suggestions would be greatly appreciated.
Scott Dortch
Director of Operations
The Order Fulfillment Group
All,
I have done some searching, looking for a module for interacting with web pages.
The only module, that appears to be related is LWP. I read through those docs,
and, I am a novice, so they are a little confusing. Does anyone know of a good
tutorial,
resource for an explanation on how to in
You're probably using
$ perl -MCPAN -e shell
> install
If you're not, you should. Anyway, this method tries
3 different ways to download a module, lwp, Net::Ftp
and ncftp. Any one of these should work if you have
them installed. If not, install them.
Hal Wigoda <[EMAIL PRO
On Fri, Jun 29, 2001 at 11:31:28AM -0500, Hal Wigoda wrote:
> When you install a perl module from CPAN
> should you do it as root???
Often the answer you'll see in response to this question is "yes", as
evidenced by the two answers I see to your question already. The real
answer is "it depends"
sorry about the terse code snippet
Basically, I have an SSH tunnel that is controlled by another
process and I want to tell when that ssh tunnel is closed.
(I have both the PID for this SSH tunnel process and the port #
of the local side of the tunnel)
I am checking for closed tunnels 2 w
On Fri, 29 Jun 2001, Brett W. McCoy wrote:
> > Is there any way to open a HTM page from the Perl program? When the
> > script runs, it opens the page after some conditions were checked.
>
> open(HTML, "
> while() { print }
>
> close(HTML)
^^^
Oops, left off the final ; !
-- Brett
dunno about the select module, but a normal call to select will block.
that is why in my other mail i had given you the option of blocking on
select in another thread/process
/kk
On Fri, Jun 29, 2001 at 12:36:20PM -0400, Ronald J. Yacketta wrote:
> Maybe I just don't understand..
> but wont there
On Fri, Jun 29, 2001 at 02:28:50PM +0200, Ela Jarecka wrote:
> Hi,
> Executing my program with -w option I get the following warning:
> 'Value of construct can be "0"; test with defined() at readData
> line 65535.'
>
> Surely I do not have 65535 lines in my program, but I suspect this one:
>
>
On Fri, 29 Jun 2001, Mike Truong wrote:
> Is there any way to open a HTM page from the Perl program? When the
> script runs, it opens the page after some conditions were checked.
open(HTML, ") { print }
close(HTML)
-- Brett
http://www.chapelperilous.net/btfw
On 29 Jun 2001 09:00:50 -0700, Randal L. Schwartz wrote:
> > "Chas" == Chas Owens <[EMAIL PROTECTED]> writes:
>
> Chas> my $query = "
> Chas> SELECT a.filename, a.size, a.date, b.owner, c.group
> Chas> FROM filesystem a, outer owner b, outer group c
> Chas>
I'm trying to install a module as root
from cpan
and it is looking for my ncftp program
and it is not found.
What do i do now??
I'm using mandrake 7.2 on my linux server.
I have a Perl program that loads a bunch of report names in a hash (%TITLES).
I then read through files in a directory trying to match the report name of the file
to the report name in the hash. When I get a hit, I use the reference of the hash hit
to pick up an array that tells me on what line o
Is there any way to open a HTM page from the Perl program? When the script runs, it
opens the page after some conditions were checked.
Thanks in advance for you help.
Hi Matt
Can you describe a little bit what U are trying to do or include more of
the code. Depending on what U are trying to do, there may be less expensive
alternatives
Thanks
Jim
>
>
>
>
> From PERL, I have been doing some system calls like this:
> (see * lines)
>
>
> * my $procentry=`
On Fri, 29 Jun 2001, Hal Wigoda wrote:
> When you install a perl module from CPAN
> should you do it as root???
Yes.
-- Brett
http://www.chapelperilous.net/btfwk/
"We can't schedule an or
On Fri, Jun 29, 2001 at 11:31:28AM -0500, Hal Wigoda wrote:
>
> When you install a perl module from CPAN
> should you do it as root???
That's the easiest way to do it.
Another possibility is to install somewhere else on the file system,
not in the system site_perl directory. That other direct
Maybe I just don't understand..
but wont there _always_ be data to read from netstat?
to me, it seems as tho the loop _not_ work as intended, it
would always pass the can_read and read data from netstat and
never parse the other code?
Regards,
Ron
> -Original Message-
> From: David M. L
>From PERL, I have been doing some system calls like this:
(see * lines)
* my $procentry=`ps -ef | grep -v grep | grep $self->{pid} `;
chomp $procentry;
$self->debug(1, "Procentry: [$procentry]");
if ($procentry =~ /\/ ) {
$self->debug(1, " <--- closed ssh tunnel. Tunnel proc
When you install a perl module from CPAN
should you do it as root???
On Fri, Jun 29, 2001 at 10:15:54AM -0400, F.H wrote:
> CITY:while (my $line = ){
>
> my @line = split /\s*,\s*/, $line;
> my $city = $line[3];
>
> foreach my $city (keys %state) {
> foreach my $street (@{ $state{$city} } ){
> if (
> Hi,
>
> I tested with a while loop. They do change after
> a while. This probably has to do with how the
> output is done on the same terminal in windows
> and how it handle timesharing.
>
> Fork does work correctly with my version
> of ActivePerl on Win32...
>
> -Robin
>
> -Original M
You could do this
$returned = `spam -momittag -c $tooldir/nsgmls.cat $dtddir/$.dtd $file`;
$returned will now contain whatever your program would have printed to the
console.
You can work with the data in a perl script, or just save it out using perl
open OUT, ">$newfile" or die "Can't create
Hi all,
I am relatively new to Perl and my background is not programming although I quite
enjoy manipulating text using Perl, with this in
mind I would appreciate any replies being kept relatively simple, if that's possible.
My problem, I am running an exe file within perl and receiving the mes
On 29 Jun 2001 10:46:39 -0400, Kim Green wrote:
>
> Brett and Chas,
>
> I did create two file handles and alter my conditional statements, one to
> work when there is a variable, and one for when there's no variable. The
> first SQL statement should return everything for a given filename; the o
On Fri, 29 Jun 2001, Humberto Varela wrote:
> sorry to ask such a simple question, but i can't find reference to this syntax in a
>couple of my Perl reference books (i think it's time i bought the Camel book)
>
> --
>
>
> ALL_SESSIONS: foreach $session_dir (@ARGV) {
> @studies = `ls
Hey everyone:
Anyone using fork() in Win32 ActivePerl?
Consider the following code:
use FileHandle;
STDOUT->autoflush(1);
$kidpid = fork();
print "pid = $$ kidpid = $kidpid\n";
print "pid = $$ kidpid = $kidpid\n";
print "pid = $$ kidpid = $ki
This bit of code generates a file with all three types of new line in
it
open(TESTFILE, "> test.txt")
or die "Sorry, cannot open the test file";
binmode(TESTFILE);
print TESTFILE "This is a DOS line ending\x0d\x0a";
print TESTFILE "This is a Mac line ending\x0d";
print TESTFILE "This is
--- Jerry Preston <[EMAIL PROTECTED]> wrote:
> The * is a typeglob that are still used for passing or storing
> filehandles. Using my is to the most frequently used form of
> lexically scoped
> declaration. You might look at scoped declarations.
For most cases, I'd recommend using the FileHan
On Win32, typing
ppm verify
at the command prompt will list all the modules installed on your system
quit
will exit the ppm tool
[EMAIL PROTECTED] wrote:
> Help with Modules please.
>
> Is there a option I can run with perl to find out if a particular module is
>installed?
>
> Thanks,
>
> Anna
Brett and Chas,
I did create two file handles and alter my conditional statements, one to
work when there is a variable, and one for when there's no variable. The
first SQL statement should return everything for a given filename; the other
should return everything for all filenames that meet th
On Thu, 28 Jun 2001, Ronald J. Yacketta wrote:
> I have heard doing it this way will cause grief.. need blocking i/o or
> something along that lines. Also, I head that the flow of the program
> would _stop_ when reading the data...
>
> are there any other solutions?
You can get around blocking
Ela,
The * is a typeglob that are still used for passing or storing filehandles. Using my
is to the most frequently used form of lexically scoped
declaration. You might look at scoped declarations.
Jerry
Ela Jarecka wrote:
>
> Hi,
> It is declared as my $FILEH at the beginning of the file
Labels are very useful for breaking out of nested loops:
LOOP1: while (condition1) {
LOOP2 while (condition2) {
last LOOP1 if (fatal error);
}
}
On 29 Jun 2001 16:17:54 +0200, Aaron Craig wrote:
> ALL_CAPS:
> is a label that sets off a blo
Hi dave,
I assume you have Blah.pm in the same directory as tst? -T removed .
(the cwd) from @INC, so it isn't finding it. You can a) put Blah.pm
somewhere in @INC, or b) use lib qw(.);
You may also want to read the perlsec doc, which explains more about
tainting.
On Fri, Jun 29, 2001 at 07:21:
You can also use if for inner and outer loops. For example
OUTER: foreach(@array1) {
INNER: foreach(@array2) {
next OUTER if /find this/;
}
}
So for every value in @array1, you are testing each value in @array2. When
you find that value in @array2, you stop and mo
i found it.
page 104 of Learning Perl, 2nd.
sheesh...
this is what happens when i'm only 1/2 cup of coffee into the morning.
thanks all!
--
On Friday, June 29, 2001 09:10, Humberto Varela <[EMAIL PROTECTED]> wrote:
>sorry to ask such a simple question, but i can't find reference
>to this sy
Here is an ultra-simple script "tst":
---
#!/usr/bin/perl -w
use Blah;
$b = new Blah;
print "foo";
$b->bar();
---
Here is the ultra simple module "Blah.pm":
package Blah;
sub new {
my $pkg = shift;
bless {};
$pkg;
}
sub bar
ALL_CAPS:
is a label that sets off a block of code. A more obvious use for it would
be to emulate the switch structure in C++:
SWITCH:
{
if($var == 1)
{
do something
last SWITCH; # skip the rest of this block
}
Michael Fowler <[EMAIL PROTECTED]> wrote:
>
> You probably shouldn't be using a bare block as a looping construct. What
> is the intent of your code, what do you want it to do if $street eq 'MAIN'
> or $street ne 'MAIN'?
>
Sorry I have not been quite clear about what I want to get:
use strict
sorry to ask such a simple question, but i can't find reference to this syntax in a
couple of my Perl reference books (i think it's time i bought the Camel book)
--
ALL_SESSIONS: foreach $session_dir (@ARGV) {
@studies = `ls -1 "$session_dir" `;
@session_path = split /\//, $ses
> "Chas" == Chas Owens <[EMAIL PROTECTED]> writes:
Chas> In cases where you expect 0 to be a valid value it may be better to use
Chas> this construct:
Chas> $var = defined($ARGV[0]) ? $ARGV[0] : DEFAULT;
I prefer the sensible:
$var = @ARGV ? shift : DEFAULT;
Why test defined when you know
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