muba's user image
User since: Mar 03, 2004 at 09:25 UTC (20 years ago)
Last here: Mar 29, 2021 at 22:51 UTC (3 years ago)
Experience: 4393
Level:Priest (14)
Writeups: 459
Location:The Netherlands
User's localtime: Jun 23, 2024 at 01:23 CEST
Scratchpad: View
For this user:Search nodes

My nodes that made it to the front page

Date Category Title
Nov 2015 Meditations "Indirect" object syntax?
Oct 2015 SoPW [Moose] extends(...) throws "Subroutine redefined" warnings
Jan 2013 Meditations Hungarian notation, kind of
Sep 2010 SoPW A matter of style: how to perform a simple action based on a simple condition?
Feb 2007 SoPW UTF-8 text files with Byte Order Mark
Jun 2006 SoPW How is perl able to handle the null byte?
Sep 2004 Meditations A "but" operator.
Sep 2004 SoPW Extract subroutines from a Perl s‎crip‎t. OR: "Only perl can parse Perl." But can it help me to do so?
Aug 2004 and onward Meditations / Regex tutorials Regexp do's and don'ts
Jul 2004 Meditations HTML - separating design and logic
May 2004 SoPW Change the parent of an instance
Mar 2004 SoPW So, now what are taints?
Mar 2004 SoPW See if a certain package has a certain sub, without executing that sub


Ways to find out if $scalar is numeric

tye and me having a little fun in the chatterbox.

[muba]: my $is_string = ($scalar ^ $scalar) eq ("$scalar" ^ "$scalar");
[tye]: my $isNumber = $scalar ^ '00' eq $scalar;
[tye]: my $isNumber = do { my $warn= 0; local $SIG{__WARN__}= sub { $warn= 1 }; use warnings; $scalar^=''; $warn };
[tye]: my $isNumber = ( $scalar ^ "$scalar" ) =~ /\d/;