That worked. I was so close... For dereferencing I had tried (and it obviously failed).

my $transcripts_line = join "\t", @{ $transcripts{$transcript_ip}{$tra
+nscript_id}{@transcripts_columns} };

[download]

So the location of that dereference closing bracket made all the difference. I need to stare at this (and look deeper with print) for a minute or two until it makes sense to me why I should be dereferencing a list from just the first two keys before taking a hash slice of that list with the @transcripts_columns array... That's what it looks like your code is doing to me at first glance anyway, perhaps I'm even interpreting that wrong.

Thanks choroba. I'll upvote tomorrow, I'm out of votes for the day.

I love it when things get difficult; after all, difficult pays the mortgage. - Dr. Keith Whites
I hate it when things get difficult, so I'll just sell my house and rent cheap instead. - perldigious

In reply to Re^2: Syntax Question Related to "join" on a Complex Data Structure by perldigious
in thread Syntax Question Related to "join" on a Complex Data Structure by perldigious

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.