The p6 solution above has something yours doesn't, take and gather. By default (at least last week ;) ) take and gather are lazy.
Sure, take and gather are lazy. But since you need the entire list anyway, it doesn't really matter, does it? Lazy lists are nice if you don't need the entire thing - if you need the entire thing, it hardly matters.

I still don't see the point of the various Perl6 solutions. The solution you present above doesn't have any benefits of the Perl5 solution - it just uses a different syntax, not even syntax that's significantly shorter, or easier to understand (it isn't harder or longer either - just different). It doesn't score on the "see how much easier this problem is in perl6" scale.

Perl --((8:>*

In reply to Re^3: cross combinations by Perl Mouse
in thread cross combinations by jql

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.