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Questions tagged perl

535 questions · page 2 of 11

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10
votes
4
answers

Why does `$v = () = split` return 1?

perl
asked 2012-08-28T09:14:19.863
18
votes
2
answers

Create a directory in Perl for a logfile if it does not exist

perl directory mkdir
asked 2012-08-21T08:58:59.897
18
votes
2
answers

Re-reading from already read filehandle

perl filehandle
asked 2012-08-20T19:08:36.727
8
votes
4
answers

Function composition in Perl

perl functional-programming
asked 2012-08-20T12:40:50.663
17
votes
6
answers

How to install JSON.pm perl module on OSX

macos perl perl-module
asked 2012-08-19T14:34:51.523
13
votes
2
answers

Perl XML::LibXML $node->findnodes($xpath) finds nodes it shouldn't

xml perl xpath xml-libxml
asked 2012-08-14T14:53:52.367
11
votes
2
answers

What is print <<EOF; and how is it working?

perl
asked 2012-08-14T08:16:33.347
31
votes
5
answers

Kleene's Star: why does $_ = "a"; s/a*/e/g produce: ee

regex perl
asked 2012-08-07T23:41:06.317
16
votes
5
answers

How to upgrade perl modules that install from CPAN?

perl upgrade cpan
asked 2012-07-27T02:01:21.910
11
votes
3
answers

Getting unique random line (at each script run) from an text file with perl

perl
asked 2012-07-23T12:11:48.577
17
votes
1
answers

Nmap::Parser, Segmentation fault on large files

xml perl cpan nmap
asked 2012-07-23T09:05:49.067
10
votes
8
answers

Fast alternative to grep -f

perl awk
asked 2012-07-15T06:48:00.470
13
votes
1
answers

How do I upgrade all upgradable packages using ppm?

perl upgrade
asked 2012-07-13T08:01:35.040
8
votes
3
answers

In Perl, how can I read from multiple filehandles in one loop?

perl file-io
asked 2012-07-12T15:47:37.530
13
votes
1
answers

Cannot understand result for multiline regex qr/( . $ .+ )/xms

regex perl
asked 2012-07-10T11:32:45.133
22
votes
2
answers

Perl Regular Expression - What does gc modifier means?

regex perl
asked 2012-07-09T12:51:50.417
14
votes
2
answers

Why does MySQL's performance decrease when queries are executed in parallel?

mysql performance perl
asked 2012-06-22T16:40:07.177
14
votes
3
answers

Using regular expressions to find a word with the five letters abcde, each letter appearing exactly once, in any order, with no breaks in between

regex perl
asked 2012-06-21T17:14:25.570
12
votes
1
answers

Perl Tk Bind <Return> is not Number Pad return?

perl bind perltk
asked 2012-06-19T20:47:20.353
9
votes
4
answers

How can I test error messages including $! without locale issues?

perl unit-testing localization internationalization error-handling
asked 2012-06-16T19:50:08.150
8
votes
1
answers

Regex for uppercase Unicode does not match "Ó"?

regex perl unicode utf-8
asked 2012-06-05T04:39:26.417
11
votes
2
answers

Is it safe in Perl to delete a key from a hash reference when I loop on the same hash? And why?

perl hash key
asked 2012-06-01T16:12:34.180
10
votes
2
answers

How to normalize Perl function arguments for memoization?

perl
asked 2012-05-31T13:58:19.230
10
votes
2
answers

Perl Unicode internals - mess with utf8

perl unicode utf-8
asked 2012-05-30T21:14:22.407
32
votes
3
answers

Is there a one-liner to get the first element of a split?

regex perl
asked 2012-05-29T12:39:38.213
8
votes
4
answers

Perl/Soap lite : "Server was unable to process request. Object reference not set to an instance of an object"

web-services perl soap soaplite
asked 2012-05-25T09:38:57.227
13
votes
3
answers

difference between my and our ? (declared in the same file)

perl
asked 2012-05-23T12:27:54.947
8
votes
1
answers

In what way is `fast_abs_path` "dangerous, but potentially faster"?

perl
asked 2012-05-11T16:33:31.127
12
votes
3
answers

How to get variables shared between child and parent process while using fork in perl

perl global-variables ipc fork shared
asked 2012-05-11T03:34:25.463
38
votes
4
answers

How do I convert decimal to hexadecimal in Perl?

perl
asked 2012-05-07T11:08:22.420
8
votes
3
answers

Perl: array reference versus anonymous array

arrays perl
asked 2012-05-01T04:21:22.040
10
votes
4
answers

Getting absolute path to perl executable for the current process

perl raku
asked 2012-04-30T20:31:10.863
13
votes
1
answers

What does the keyword `no` actually do in Perl?

perl module
asked 2012-04-25T18:29:40.957
24
votes
5
answers

Ways to Flatten A Perl Array in Scalar Context

arrays perl
asked 2012-04-20T10:48:06.360
10
votes
3
answers

Extending Perl is breaking dynamic loading

perl hp-ux u2 perl-xs
asked 2012-04-13T16:09:39.287
37
votes
5
answers

Using my with parentheses and only one variable

perl
asked 2012-04-05T15:24:27.763
35
votes
2
answers

Perl Regex "Not" (negative lookahead)

regex perl regex-lookarounds
asked 2012-04-04T00:12:31.397
11
votes
2
answers

SHA256 digest in perl

perl hash md5 sha sha256
asked 2012-04-03T10:51:32.057
8
votes
2
answers

Best scripting language for Windows GUI EXE

php perl sockets wmi
asked 2012-04-02T11:04:17.687
18
votes
4
answers

How to select specific item from cartesian product without calculating every other item

perl cartesian-product
asked 2012-03-30T14:27:40.590
12
votes
3
answers

Strange "half to even" rounding in different languages

c ruby perl bash haskell
asked 2012-03-22T20:12:35.037
8
votes
6
answers

Can BerkeleyDB in perl handle a hash of hashes of hashes (up to n)?

database perl hash berkeley-db
asked 2012-03-21T16:27:37.623
19
votes
12
answers

What is the fastest way to the delete lines in a file which have no match in a second file?

ruby perl bash python-2.7 cjk
asked 2012-03-20T02:01:19.113
52
votes
6
answers

Tips for keeping Perl memory usage low

perl memory
asked 2012-03-16T06:56:43.583
12
votes
2
answers

Perl, how to parse XML file, xpath

perl xpath xml-parsing
asked 2012-03-11T00:04:16.750
9
votes
4
answers

Read unbuffered data from pipe in Perl

linux perl perl-io
asked 2012-03-09T15:29:31.870
8
votes
3
answers

How to avoid errors with perl command line parameters and use strict

perl command-line
asked 2012-03-07T03:34:56.037
8
votes
1
answers

How to overwrite a function used in a module-method?

perl function methods module overwrite
asked 2012-03-06T11:51:18.500
12
votes
2
answers

Is there a simplest way to build perl package

perl ubuntu build
asked 2012-03-05T12:11:11.493
21
votes
2
answers

Use of uninitialized value in pattern match (m//)

perl
asked 2012-02-29T03:43:39.113
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