Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Hi all,

In a post in 'Meditations', John M. Dlugosz made a claim (that I would believe might be true) about how ``in Perl 5 the contents of anything can be inspected and iterated.''.

So I was wondering how can one iterates over the content of an object? What's the general function to access each field of an object and look for uninitialised value for exemple?

And also, it there a way to iterate over the content of a closure? Like if I'd want to kill intern references to outside objects or something?

This might be more a 'language' question than a practical one...

Thanks in advance for any insights!

In reply to Iterating over *any* thing in Perl by Schemer

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, 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?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others romping around the Monastery: (3)
    As of 2021-05-09 10:02 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      Perl 7 will be out ...





      Results (100 votes). Check out past polls.

      Notices?