Hmm.. You missed my point (or you're repeating what I said). I wasn't comparing for(ARRAY) with for(TEMP_ARRAY), but for(ARRAY) with for(EXPR;EXPR;EXPR).

I do know that for and foreach are synonymous words. I was trying to clarify that in

for (@array) {$_++}

$_ is an implicit alias for the current @array element. While in

for (0 .. $#array) {$array[$_]++}

$_ an alias for the current index. And that, in terms of what to use for what (as you already clarified) was the difference I meant...

In reply to Re^6: grep, map vs. foreach performance by Flexx
in thread grep, map vs. foreach performance by Anonymous Monk

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.