What package does it belong to ?

If you declared it as a package variable, whichever package statement is in effect. In your code, that would be "main".

If you declared it as a lexical variable, it's not found in a package.

What is main package ?

The currently selected package when the interpreter starts.

If I declare $var in a program, does it automatically belong to main package ?

No, the package in effect.

if I use strict, is it required to use main before the $anything ($main::anything) ?

If you declared it as a package variable, no.

If you declared it as a lexical variable, yes. Otherwise, you'll be accessing the lexical variable.

How does $anything become a part of main package ?

I don't understand.

Or does main mean main body (and not subroutines) of program that we are dealing with ?

It's just a namespace into which variables and subs can be placed. It doesn't mean anything.

So does it mean that everything from "#!/usr/bin/perl" to the "print $var; " excluding subroutines is main ?

Absent an overriding package statement, all code (including subroutines) will be compiled into main. That means that package variables and subs will be placed in the main namespace by default.


In reply to Re: main package by ikegami
in thread main package by manishrathi

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.