Juerd,
Since memoization will probably be available, probably not even for caching, will state be used much.

I just added an example to pugs which uses state for memoization. 

use v6;

my $n = @*ARGS[0] // 42;
say fib($n);

sub fib (Int $n) {
    state %seen;
    return 1 if $n < 2;
    %seen{$n - $_} //= fib($n - $_) for 1 .. 2;
    return %seen{$n - 1} + %seen{$n - 2};
}

[download]

Cheers - L~R

In reply to Re^2: How will you use state declared variables in Perl6? by Limbic~Region
in thread How will you use state declared variables in Perl6? by Limbic~Region

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.