51 I guess the tag is a variable, and it is checking for 9eaf - but does this exist in Perl? What is the "=~" sign doing here and what are the "/" characters before and after 9eaf doing?

Nov 10, 2019 · 53 From Perl documentation: OR List operators On the right side of a list operator, it has very low precedence, such that it controls all comma-separated expressions found there.

I'm working on a Perl script. How can I parse command line parameters given to it? Example: script.pl "string1" "string2"

Per perldoc perluniintro, Perl does not support using digits other than [0-9] as numbers, so I would definitely use [0-9] if the following are both true: You want to use the result as a number (such as …

Output of perldoc -q round Does Perl have a round () function? What about ceil () and floor ()? Trig functions? Remember that int() merely truncates toward 0. For rounding to a certain number of digits, …

Jan 4, 2011 · Is there a built-in function to trim leading and trailing whitespace such that trim(" hello world ") eq "hello world"?

Jun 29, 2012 · In the case of perl /usr/bin/perl is the path to the perl interpreter. If the hashbang is left out the *nix systems won't know how to parse the script when invoked as an executable.

If I have a Perl hash with a bunch of (key, value) pairs, what is the preferred method of iterating through all the keys? I have heard that using each may in some way have unintended side effects.

Dec 27, 2012 · String compare in Perl with "eq" vs "==" [duplicate] Asked 13 years ago Modified 9 months ago Viewed 346k times

Jul 24, 2009 · In short: Perl doesn't have a data-type exclusively for text strings use == or !=, to compare two operands as numbers use eq or ne, to compare two operands as text There are many other …