For literal lists, I'd probably bypass the prototype:

&pairwise(
  sub { $a => $b },
  \@a,
  ['a'..'d'],
);

[download]

Or if you need to do it a lot, maybe wrap it with a different prototype:

sub ref_pairwise (&;@) { goto \&List::Util::pairwise }

ref_pairwise { $a + $b } \@a, ['a'..'d'];

[download]

Limiting to the size of the arrays needs to be added explicitly to the block, but isn't especially challenging:

use v5.12;
use List::MoreUtils;

my @arr = qw/a b c d e/; 
my @bar = qw/12 34 56/; 
my $i = 0;

List::MoreUtils::pairwise {
    return if $i > $#arr || $i > $#bar;
    say "\t$i";
    say "\t\t$a, $b";
    $i++;
} @arr, @bar;

[download]

(It would be more sugary if that return could be a last, but ho hum.)

use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re^3: Parallel processing two arrays with different numbers of elements by tobyink
in thread Parallel processing two arrays with different numbers of elements by ww

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.