
operators - What is the difference between "||" and "or" in Perl ...
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.
What's the use of <> in Perl? - Stack Overflow
Sep 5, 2012 · @pst, <> is not a file handle, "null" or otherwise. It's an operator. Specifically, the readline operator. There's a reference to it as the "angle operator" in perlvar, although there …
What is the meaning of @_ in Perl? - Stack Overflow
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 …
What does the -> arrow do in Perl? - Stack Overflow
7 Perl arrow operator has one other use: Class−>method invokes subroutine method in package Class though it's completely different than your code sample. Only including it for …
Perl flags -pe, -pi, -p, -w, -d, -i, -t? - Stack Overflow
Jun 10, 2011 · Below are the flags that I encounter most often, and I don't have a clue what they mean: perl -pe perl -pi perl -p perl -w perl -d perl -i perl -t I will be very grateful if you tell me …
regex - What is /^ and /i in Perl? - Stack Overflow
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., …
How do I perform a Perl substitution on a string while keeping the ...
In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original? I usually just copy the stri...
terminology - What does " ~~ " mean in Perl? - Stack Overflow
5 It is the smartmatch operator. In general, when you want information about operators in Perl, see perldoc perlop
What is the significance of -T or -w in #!/usr/bin/perl?
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.
What's the safest way to iterate through the keys of a Perl hash?
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 …