Perl Hashes look sequential to me, they look exactly like a specialised array with the the condition that it contains an even number of entries. 

#my %var = ('k1' => 'v1', 'k2' => 'v2');
my %var = ('k1', 'v1', 'k2','v2');
print $var{k2}. "\n";

[download]
I now what interpolation means in other contexts, I'm not sure in relation to hashes.

As tempting as it is to use the some of the convenient shortcuts of Perl (and I am aware of the one you're suggesting), I prefer to use explicit notation in all languages as a rule of thumb, its safer, clearer, and avoids potentially unintended behavious.

Defining what the primitives are for a particular language is irrelevant to my original question, so I won't pursue it.

In reply to Re^2: How do I disable variable expansion of strings? by seank
in thread How do I disable variable expansion of strings? by seank

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.