dangerous: Being able or likely to do harm.

I don't disagree that my mental model might be flawed. However, given my internal concept of foreach it is likely that modifying the array while using for each is dangerous (likely to do harm).

You could certainly make your points without splitting hairs on the meanings of words. The fact is perl has foreach to hide the use of an index to iterate over an array, makeing most array usage much easier in the process. I believe that this act of obscuring the underlying use of indexes would also mean that the actual implementation is not a reliable way to decide how it will respond when you modify the array. Since the documentation explicitly says not to do it and I don't know how its implemented internally, I'll stick with not modifying it and I don't have to attribute it to fear or a faulty mental model, it's just good since.


___________
Eric Hodges

In reply to Re^7: self-feeding infinite loop by eric256
in thread self-feeding infinite loop by spx2

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.