14 The '=~' operator is a binary binding operator that indicates the following operation will search or modify the scalar on the left. The default (unspecified) operator is 'm' for match. The …

Here the sigil changes to $ to denote that you are accessing a scalar, however the trailing [0] tells perl that it is accessing a scalar element of the array in _ or in other words, @_.

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.

Dec 30, 2010 · 128 perldoc perlvar is the first place to check for any special-named Perl variable info. Quoting: @_: Within a subroutine the array @_ contains the parameters passed to that …

In Perl, the operator s/ is used to replace parts of a string. Now s/ will alter its parameter (the string) in place. I would however like to replace parts of a string befor printing it, as in pri...

The match operator is the syntax that tells the Perl interpreter: here comes a regex. In Perl, the match operator is normally delimited by '/' at start and end, but you can use delimiters (e.g., …

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

In 5.000 to 5.003 perls, trigonometry was done in the Math::Complex module. With 5.004, the Math::Trig module (part of the standard Perl distribution) implements the trigonometric …

Feb 1, 2012 · Please explain what exactly the difference of $_ and @_ is in Perl. When to use which, given by example code.

Dec 5, 2015 · 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 …