This merges the list of hashes by storing them temporarilly in the %merge hash and indexing them by 'domain'. You can omit the $to_merge temporary if you're willing to get a bit more ugly syntax.

my @c = merge_aoh_by_domain( @a, @b );

sub merge_aoh_by_domain {
    my %merge;
    for my $domain_ref ( @_ ) {
        # less ugly
        my $to_merge = $merge{$domain_ref->{domain}} ||= {};
        @$to_merge{ keys %$domain_ref } = values %$domain_ref;

        # ugly
        # @{$merge{$domain_ref->{domain}}{ keys %$domain_ref } = value
+s %$domain_ref;
    }

    return values %merge;
}

[download]

⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊

In reply to Re: combine two AoHs by diotalevi
in thread combine two AoHs by alienhuman

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.