Below is result of benchmark in which none of the three transform subs print (to STDERR), instead they just return the array reference to the whole thing (sub transform{ return[ map{} sort{} map{} (list) ]; }). 

URL Length Statistics:
  Total URLs: 1497  Lengths' Sum: 216277
  Min: 13  Max: 1270
  Mean: 144.474  Median: 62.000
  Std. Deviation: 234.977  Variance: 55214.052

Benchmark: running GRT, GRT UK, ST for at least 5 CPU seconds...
       GRT:  5 wallclock secs ( 5.05 usr +  0.01 sys =  5.06 CPU) @ 10.07/s (n=51)
    GRT UK:  5 wallclock secs ( 5.08 usr +  0.00 sys =  5.08 CPU) @  8.47/s (n=43)
        ST:  5 wallclock secs ( 5.27 usr +  0.00 sys =  5.27 CPU) @  7.79/s (n=41)
         Rate     ST GRT UK    GRT
ST     7.79/s     --    -8%   -23%
GRT UK 8.47/s     9%     --   -16%
GRT    10.1/s    29%    19%     --

In reply to Re: Re: Re: Sorting URLs on domain/host: sortkeys generation by parv
in thread Sorting URLs on domain/host: sortkeys generation by parv

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.