Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
It doesn't matter. What happens is:
  1. Some other module or program uses your module.
  2. During its compilation, the perl compiler encounters "use Module1";
  3. This triggers your module to get compiled; while doing so, Module2 and Module3 will get compiled (if not already compiled). Module2->import and Module3->import will be called.
  4. Your module will run. First thing it does is to compile Exporter (if it hasn't been compiled already).
  5. Then Module1->import is called (assuming that other module or program uses "use Module1"). Which means Exporter::import is called.
  6. Exporter::import exports fn1 and fn2 to the calling module or program.
  7. Perl will resume compiling the calling module or program.
It doesn't matter where you place 'require Exporter'.

I've never understood why people use the idiom 'require Exporter'. I never do. 'use Exporter();' also compiles Exporter without calling import.

In reply to Re: Advice on style by JavaFan
in thread Advice on style by Anonymous Monk

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others drinking their drinks and smoking their pipes about the Monastery: (5)
    As of 2018-06-21 05:13 GMT
    Find Nodes?
      Voting Booth?
      Should cpanminus be part of the standard Perl release?

      Results (117 votes). Check out past polls.