keys already returns a list, so you could directly assign that to an array and use splice to truncate it:

my @columns = keys $AoH_records->[0];
splice @columns, 10;
$csv->column_names(\@columns);
[download]

If you don't care about truncating the array, you don't even need to save it, since ->column_names() will accept a list as well as an array reference:

$csv->column_names(keys $AoH_records->[0]);
[download]

BTW, on truncating arrays:

• It's also possible to assign to $#columns to set it to a specific length, but unlike splice, this will pad it with new undefined elements if it's shorter.

• The above splice call will produce a warning if the array has less than ten elements. To avoid that, do e.g. this:

  use List::Util qw/min/;
  # ...
  splice @columns, min 10, scalar @columns
  [download]

---

---

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:
	&		&
	<		&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.