As an aside, you might not want to commit the: my %uniq; @uniq{@arr} = (1) x @arr; @arr = keys %uniq; idiom to memory too closely, because it's broken :) 
my @arr = ("what", "the", "the", {"heck" => "I"},
           {"heck" => "I"}, "don't", "get", "this");

my %uniq; @uniq{@arr} = (1) x @arr; @arr = keys %uniq;
print join "\n", @arr;

[download]
prints: 
this
don't
the
HASH(0x1002f4e0)
get
HASH(0x1002116c)
what
perldoc -q duplicate offers a few ways to do this depending on what you mean by "removing duplicates", but upon brief inspection it doesn't look like any of those would catch this problem either.

Hmmm...an interesting golf perhaps? :)

(Here's what it looks like in Python, if that helps any)

In reply to Re: The Mother Tongue by mothra
in thread The Mother Tongue by George_Sherston

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.