perl Questions
4
I have just started with Perl today and installed ActivePerl 5.24.1 and everything went well. I was able to create my test program testPerl.pl with simple a print command and run it through console...
Korikorie asked 19/1, 2017 at 5:55
3
Solved
This question comes from a need to ensure that changes I've made to code doesn't affect the values it outputs to text file. Ideally, I'd roll a sub to take in two filenames and return 1or return 0 ...
Conquistador asked 17/5, 2010 at 9:30
6
On Windows, how can I check whether my Perl installation is 32 or 64 bit?
Pardoes asked 2/10, 2014 at 20:4
3
Solved
I'm trying to sort lists of names with Perl with a specific letter order to perform some special features.
The sorting would be working the same way as sort { $a cmp $b } but with a different succe...
8
Solved
Is there a regex to match "all characters including newlines"?
For example, in the regex below, there is no output from $2 because (.+?) doesn't include new lines when matching.
$string = "START...
7
Solved
For (mainly) pedagogical reasons, I'm trying to run this workflow in GitHub actions:
name: "We 🎔 Perl"
on:
issues:
types: [opened, edited, milestoned]
jobs:
seasonal_greetings:
runs-on: wind...
Katharyn asked 4/12, 2019 at 11:47
3
Solved
I am reading through a massive file to store data in a very large hash. I am trying to keep the RAM use as small as possible.
I have a MWE that shows strange behavior in Perl:
#!/usr/bin/env perl
...
4
Solved
I am using LWP to download content from web pages, and I would like to limit the amount of time it waits for a page. This is accomplished in LWP like this:
my $ua = LWP::UserAgent->new;
$ua->...
Leisure asked 12/6, 2012 at 2:13
6
Solved
How can I get the name of the script?
For example, I have a Perl script with the name XXX.pl. This file contains:
$name = #some function that obtains the script's own name
print $name;
Output:
...
Excreta asked 5/1, 2011 at 1:56
5
Solved
I have this file:
m64071_220512_054244/12584899/ccs rev pet047-10055 ACGTGCGACCTTGTGA TTGAGGGTTCAAACGTGCGACCTTGTGA
m64071_220512_054244/128321000/ccs rev pet047-10055 ACGTGCGACCTTGTGA TTGAGGGTTCAAA...
Nerta asked 21/12, 2023 at 19:24
6
Solved
I'm looking for an easy way to check for a correct number of command line parameters, displaying a usage message if an error occurs and then immediately exit.
I thought of something like
if (@ARGV ...
Isbell asked 16/2, 2011 at 21:30
3
The following prints ac | a | bbb | c
#!/usr/bin/env perl
use strict;
use warnings;
# use re 'debug';
my $str = 'aacbbbcac';
if ($str =~ m/((a+)?(b+)?(c))*/) {
print "$1 | $2 | $3 | $4\n&...
2
I'm trying to compute eigenvectors of symmetric matrices with the great eigens_sym function of the great PDL Perl module.
use strict; # Be pessimistic and careful with interpretations in the compil...
7
Solved
How do I sleep for shorter than a second in Perl?
4
Solved
I don't think the question needs any explanation.
I'm writing a software that can boot virtual machines to simulate a network. I would like to disable this feature if the software is already runnin...
Valise asked 13/10, 2012 at 14:59
4
Solved
What's the best practice for implementing Singletons in Perl?
3
Solved
In this example script:
#perl 5.26.1
$foo = "batcathat";
if ($foo =~ /cat/g) {
print "yes\n";
} else {
print "no\n";
}
if ($foo =~ /cat/g) {
print "yes\n&qu...
1
Written a new recipe for libmoose module of perl and found the following error, Can anyone please help to fix it.
| x86_64-poky-linux-ld: unrecognized option '-Wl,-O1'
| x86_64-poky-linux-ld: use t...
5
Solved
I'm currently trying to extract a substring and version number from a filename using bash.
There are two formats the filenames will be in:
example-substring-1.1.0.tgz
example-substring-1.1.0-branch...
3
Solved
I'm playing around with Perl prototypes to learn more about them; I understand that they don't work like most other languages. I don't want them to. I'm specifically looking to get a wrapper functi...
Protect asked 8/11, 2023 at 13:22
3
I'm getting Can't locate Config/YAML.pm in @INC (you may need to install the Config::YAML module) while running a perl script.
Can't locate Config/YAML.pm in @INC (you may need to install the
C...
10
Solved
I have tried:
$var = false;
$var = FALSE;
$var = False;
None of these work. I get the error message
Bareword "false" not allowed while "strict subs" is in use.
3
Solved
I have a lot perl code that does different things in test and production, and I want to lock my code to specific versions of CPAN modules in case there are some changes to some of them in the futur...
Fingernail asked 15/1, 2013 at 6:29
3
Solved
Suppose I have a piece of Perl code like:
foreach my $x (@x) {
foreach my $y (@z) {
foreach my $z (@z) {
if (something()) {
# I want to break free!
}
# do stuff
}
# do stuff
}
# do stuf...
Endres asked 14/9, 2010 at 11:45
5
Solved
I am trying to install DBD::Oracle using the CPAN shell in Strawberry Perl. I initially experienced an error because the Makefile could not locate an OCI library, so I installed the instant client ...
Librium asked 4/12, 2009 at 18:29
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