Hello! First post here.

How is it that package->import imports package into the caller?

I know that I can do the following:

{
  package Base;
  use strict;
  use warnings;

  sub import {
    strict->import;
    warnings->import;
  }
}

{
  package A;
  use Base;  # Now A has strict and warnings
}

[download]

… but how does that work? Why is it that Base::import{… strict->import;} is the same as {package A; use strict;}?

Is there an implicit argument to import that’s being passed that tells it to import into the calling package? Or am I misunderstanding a core aspect of use/import behavior?

In reply to import() into caller by assist/control

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.