• grep returns the elements for which the test is true, so in your case you'd get the matching arrayrefs
  • of course you have no arrayrefs in @test2 with ER as their first element
  • perhaps you meant $_->[0] =~ /ER/ as the test?
  • Then again that'd just give you two items ([ "XERXES", "1002"] and [ "SHERRY", "1006" ]) in @grepnames
  • so you'd probably want to iterate over the indexen of your array instead if that's what you're really interested in (i.e my @name_indexen = grep $test2[ $_ ]->[0] =~ /ER/, 0..$#test2;)
  • Of course if you're really interested in the names themselves then what you really want is probably going to wind up some combination with map and you'll want to search for the term "schwartzian transform"

    • The cake is a lie.
    The cake is a lie.
    The cake is a lie.

    In reply to Re: substring search in an array of arrays by Fletch
    in thread substring search in an array of arrays by jgatrell42

    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! —
    • How do I compose an effective node title?
    • How do I post a question effectively?
    • Markup in the Monastery
  • 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.