title: Code hot swapping in Erlang
body: <p>I recently saw a video about Erlang on InfoQ,
  In that video one of the creators presented how to replace the behavior of a message loop.</p>
  
  <p>He was simply sending a message containing a lambda of the new version of the message loop code, which then was invoked instead of calling the old loop again.</p>
  
  <p>Is that code hot swapping in Erlang reffers to?
  Or is that some other more native feature?</p>