Esteemed Monks.

Let's say I have two hashes : 
%hash1 = ( 
  foo => 'bar',
  baz => { quux => 'qwe',
           rty => 'uiop', },
  perl => ['monks', 'monastery', 'robes'],
)

%hash2 = (
  wizardry => 'hocus-pocus',
  foo => 'f00',
  baz => { grail => 'arthur', },
  perl => ['yayy', 'yippee'],
  hash3 => {key1 => 'value1', key2 => 'value2',  },
);

[download]

I'd like to "add" %hash2 to %hash1, and existing data should be overwritten while nonexistent data should be added. What would be the best approach to this?

-- jkva

In reply to Combining / Merging two Ho(H|A)s by jkva

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.