title: Erlang - How to find the name of current function at runtime?
body: <p>Can I find the name of the current function I'm in at runtime?</p>
  
  <pre><code>foo() -&gt;
    foo = find_function_name().
  </code></pre>
  
  <p>Is it possible to write the fun find_function_name/0? 
  How would you do it? Does it already exist?</p>