Perl
in [Programming]
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FAQ 4.54 Why does defined() return true on empty arrays and hashes? This is an excerpt from the latest version perlfaq4.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 . --------... 24 Jul 2010 00:33
FAQ 5.19 How can I open a file with a leading ">" or trailing blanks? This is an excerpt from the latest version perlfaq5.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 . --------... 23 Jul 2010 18:01
exist function in perl 5.12.1 In perl 5.12.1, with reference to the exist function "perldoc -f exist" ( see also http://perldoc.perl.org/functions/exists.html ) it says [...] Although the mostly deeply nested array or hash will not spring into existence just because its existence was tested, any intervening ones will. Thus $ref-... 25 Jul 2010 17:16
Confusion about the smart matching operator Hi, I've been reading up on the smart matching operator ('~~') in "perldoc perlsyn", and I have to say I'm a little confused on a certain aspect of it. Say I have an array like: my @a = ('cat', 'dog', 55); If I want to discover if any of its elements contains only digits, I can use the '~~'... 29 Jul 2010 03:10
FAQ 8.16 How can I sleep() or alarm() for under a second? This is an excerpt from the latest version perlfaq8.pod, which comes with the standard Perl distribution. These postings aim to reduce the number of repeated questions as well as allow the community to review and update the answers. The latest version of the complete perlfaq is at http://faq.perl.org . --------... 23 Jul 2010 12:31
Can't locate Unix/Whereis.pm in @INC Hi I am new to Perl, and I try to run a Perl script which is giving me an error on the first line : use Unix::Whereis; => Can't locate Unix/Whereis.pm in @IN(... (I believe a module is missing ... I am using the pre-installed Perl on Mac OSX 10.6 (Snow) should I need to add anything to my install ? (... 24 Jul 2010 00:33
FAQ 4.76 How do I verify a credit card checksum? This is an excerpt from the latest version perlfaq4.pod, which comes with the standard Perl distribution. These postings aim to reduce the number of repeated questions as well as allow the community to review and update the answers. The latest version of the complete perlfaq is at http://faq.perl.org . --------... 23 Jul 2010 06:59
Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $) Outline Before posting to comp.lang.perl.misc Must - Check the Perl Frequently Asked Questions (FAQ) - Check the other standard Perl docs (*.pod) Really Really Should - Lurk for a while before posting - Search a Usenet archive If You Like - Check Other Re... 23 Jul 2010 03:47
Use of uninitialised value, how to avoid? I'm trying to avoid warnings in my Apache logs. Here's the code that's causing the problem: unless ($methods->{$param{method}}) { $param{method} = "default"; } If the web-page in question is called without any parameters then $param{method} is undef, in which case I want $param->{method} = "default". ... 23 Jul 2010 05:55
Speed of reading some MB of data using qx(...) I have a program that processes PDF files by converting them to Postscript, read the ps and do something with it. I use pdftops (from xpdf) for the pdf->ps conversion and retrieve the result like this: $ps_text = qx( pdftops $infile - ); On win32 using strawberry perl (tried 5.10 and 5.12) this takes much more... 29 Jul 2010 11:52 |