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?

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 subroutine. …

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.

Sep 5, 2012 · What's the use of <> in Perl. How to use it ? If we simply write <>; and while (<>) what is that the program doing in both cases?

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 what each of …

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

Nov 23, 2020 · 2.1 Perl变量 要赋值，就要先了解Perl的变量，当我了解这部分的时候挺惊讶于变量的设计思路，Perl所有数字的内部变量都是双精度浮点数（double-precision floating-point）有过其他编 …

Perl 是一门冷门的语言吗，关注者和问题数这么少？ 我想学正则，有几个人都推荐了 perl ，说它是为了文本处理而生。 但 perl 话题的关注者不到 5000人，问题数不到 300 ，这是由于 perl… 显示全部 关 …

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 string to a new …

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, …