List::MoreUtils to the rescue here... we'll generate a new array with every ACC in $data2 (ordered), then we'll iterate over $data1, using first_index() to search for its ACC in the new array created above. That'll return to $index the element location from the new array, which we then use to extract the full hash from the proper location (index) of the full $data2. Make sense? ;)

use List::MoreUtils qw(first_index);

my @all;
my @data2_acc_list;

push @data2_acc_list, $data2->[$_]{ACC} for 0..$#$data2;

for (0..$#$data1){
    my $acc = $data1->[$_]{ACC};
    my $index = first_index { /$acc/ } @data2_acc_list;
    if ($index >= 0){
        push @all, { %{ $data1->[$_] }, %{ $data2->[$index] } };
    }
}

print Dumper \@all;

[download]

Note that if $data2 has matching ACC values, things will probably be squirly, as only the first one will be hit. I also had to read the docs on first_index()... it returns -1 if the element can't be found, and I was checking for truth, not explicitly for zero or greater.

In reply to Re^3: Merging Data into one array by stevieb
in thread Merging Data into one array 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.