In working with the code from this node, Re: regex persistence of matches, I found incorrect (?) results for the values for the @+ and @_ arrays. The values of the overall match, (index 0), should be the same as the values for the one captured group, (index 1), but they aren't. Just wondering why this happened. 
#!/usr/bin/perl
use strict;
use warnings;

$_ = "foobar1";

if (/o(.*)a/) {
    for my $i (0..$#+) {
        print substr($_, $-[$i], $+[$i] - $-[$i]), "\n";
    }
}


OUTPUT

C:\perlp>perl t1.pl
ooba
ob

C:\perlp>

[download]

Chris

In reply to @- and @+ question by Cristoforo

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.