Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Thanks. Putting it in array context -- i.e. @{glob("$_/f*")} - did the trick. I changed the code to:
perl -wE 'use Data::Dumper;print Dumper grep(@{[glob("$_/f*")]},("dir1 +", "dir2", "dir3"))'
The code seems to work with that change but I just want to check that there is no need to explicitly check "if the list has at least one element" since presumably evaluating the list (by grep) will determine if it is empty or not.

I'm still not really sure why scalar context doesn't work (indeed, I would have thought scalar context would be better than list context). The stateful carry over part seems to be weird if not buggy. But as long as it works for me by forcing an array context, then it's all good even if it was far from obvious at first glance.

In reply to Re^2: Using grep and glob to find directories containing file by Anonymous Monk
in thread Using grep and glob to find directories containing file by Anonymous Monk

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others contemplating the Monastery: (6)
    As of 2015-11-25 06:55 GMT
    Find Nodes?
      Voting Booth?

      What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

      Results (671 votes), past polls