I want to use grep or map for the following refrence to find the child keys of 'Orange'.

My bold emphasis added.

my @o_kids = map { keys %{$xml->{Fruits}[0]{'Season'}{$_}} } grep /orange/i, keys %{$xml->{Fruits}[0]{'Season'}};

Uses all the keywords from your question. But I suspect, as other have mentioned, that you are not asking the right question.

Note that this solution requires you to know that (1) Fruits is an array ref (2) Orange is a key to the 'Seasons' hashref, etc. All of which means you have a rather intimate knowledge of the data structure. Unless this is homework in how to use grep, map (and aparently foreach), there is something else you're trying to accomplish.

In reply to Re: grep in hash of array by chakram88
in thread grep in hash of array by rose

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.