Re^3: First Question, why something works? (-M)

[Athanasius]

Hello i255d, and welcome to the Monastery!

Yes, this is one of many places where Perl uses the special $_ variable implicitly, making it easier to write concise, elegant code. For a list of the places where Perl uses $_ implicitly, see the first entry in perlvar#General-Variables. (If you’re not already familiar with the Perl documentation site, bookmark it now and get to know your way around as soon as possible.)

The Camel Book (4^th Edition, p. 706) has this advice:

Use the singular pronoun to increase readability:

   for (@lines) {
       $_ .= "\n";
   }

The $_ variable is Perl’s version of a pronoun, and it essentially means “it”. So the code above means “for each line, append a newline to it.”

Hope that helps,

[i255d]

Very excited to be part of the Monastery. I am still on the llama book, chapter 13. Looking forward to the next one. I am an administrator, so I felt it best not to rush through the file and directory sections of this book. Yes, I think you have answered my questions. I see someone ran my code through B::Deparse, later I will have to get into what that is.

[Anonymous Monk]

Here is a tip for you, skip anything talking about readdir and glob, start by learning File::Find::Rule and Path::Tiny
examples
Re: ExtUtils::Command touch (Path::Tiny , Shell::Command )
Re^2: Broken Function ( Path::Tiny spew )
Re: Windows - dirname(__FILE__) ( Path::Tiny::path(__FILE__)->realpath->parent
Re^2: getting picky with File::Find::Rule less typing find/rule
Re: I humbly ask for your help with parsing (Path::Tiny/File::Find::Rule)
Re: File::Find: Return array of "wanted" files (File::Find::Rule)

Also, get a copy of Modern Perl by chromatic a loose description of how experienced and effective Perl 5 programmers work....You can learn this too.

It is reviewed and recommended by Perl Tutorial Hub