A hash seems the best option in the case described. It is also faster by several orders of magnitude (for your benchmarks, however accurate it may be).
my %hash; @hash{0, 15, 16, 31} = (); # then add this to your benchmark hash => sub { while ( $data =~ /^(\d+) (\d+)/mg ) { next if exists $hash{$1} or exists $hash{$2}; return 1; } },
Rate any_cr any ugly ugly_cr hash2 hash any_cr 865/s -- -37% -54% -65% -100% -100% any 1382/s 60% -- -27% -44% -100% -100% ugly 1896/s 119% 37% -- -24% -100% -100% ugly_cr 2489/s 188% 80% 31% -- -100% -100% hash 3084047/s 356493% 222992% 162532% 123813% 26% --

In reply to Re: Why is "any" slow in this case? by sleet
in thread Why is "any" slow in this case? 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.