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 …

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

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., …

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.

Sep 26, 2009 · I currently use the following Perl to check if a variable is defined and contains text. I have to check defined first to avoid an 'uninitialized value' warning:

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 …