Yup! Have tried this in 5.10.1 and now see the difference. 

use strict;
use warnings;
use 5.010;

my @arr = (2, 5 , "aaa");

say "\@arr ~~ 5 matches" if @arr ~~ 5;
say "5 ~~ \@arr matches" if 5 ~~ @arr;
say "\@arr ~~ 3 matches" if @arr ~~ 3;
__END__
5 ~~ @arr matches

[download]

But after reading "Smart matching in detail" from perlsyn I have the impression that @arr ~~ 3 expression falls under 

    Any  Num   numeric equality  $a == $b

[download]
rule, so it should be equal to @arr == 3, and it's not, so what rule is actually applied in this case? And BTW is there any way to see what comparison have been actually performed?

In reply to Re^5: smart match operator should be smarter! by zwon
in thread smart match operator should be smarter! by 7stud

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.