title: type char to type num mapping
body: <pre><code>q)type variable
  </code></pre>
  
  <p>returns the type num of the arguement variable. </p>
  
  <p>Is there a mapping that can produce the type char from a type num or do I have to create that dictionary myself?</p>
  
  <p>Ideally something like</p>
  
  <pre><code>q)typeChar 1
  i
  </code></pre>