title: How to use a constants value as a hash key
body: <p>Is there a simple way to use the value of a defined constant as a hash / pair key in Perl6? </p>
  
  <p>For instance :</p>
  
  <pre><code>constant KEY = "a string";
  my %h = ( KEY =&gt; "a value" );
  </code></pre>
  
  <p>This will creatre a key of "KEY" not "a string".</p>
  
  <p>I can do :</p>
  
  <pre><code>my %h = ( "{KEY}" =&gt; "a value" );
  </code></pre>
  
  <p>But that seems a bit clunky. I was wondering if there was a better way?</p>