Pugs doesn't implement slice and list contexts correctly at the moment.

The idea is that if there is no explicit slice context (=nested array context), the lists are automatically flattened.

So 1, 2, 3 Z  <a b c> should become 1, 'a', 2, 'b', 3, 'c' (unless in slice context). When you use this list in a for loop, you can supply a "pointy block" with two paramters:

for @list -> $a, $b { say "$a: $b" }

There's no way you can ever use [$a, $b] as a formal parameter since it's not an lvalue (we don't have pattern matching in sub calls like haskell has... at least not yet ;-)

You can read more about the syntax at the Official Perl 6 Documentation.

Perl 6 in German

In reply to Re: perl6/pugs zip + for + subroutine params by moritz
in thread perl6/pugs zip + for + subroutine params by NetWallah

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.