I'm afraid you have unwittingly sewn great confusion with your question. Usually when we speak of an "iterator" we mean an object (rather than a simple variable) that is used to return some result each time it is used. ... The more usual term for the variable used in a for loop (both Perl and C types) is "loop variable".

I'm sorry about that. English is not my mother language and I use what I've read somewhere else. There are some sources that names the loop variable as the "iterator", like here.

Thanks about the "closures" explanation. That is something I've never tried...

In reply to Re^2: Access a global variable from a subroutine when used as "for" iterator by vitoco
in thread Access a global variable from a subroutine when used as "for" iterator by vitoco

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.