title: Invalid scenario
body: <p>Are we suppose to describe such scenario:  </p>
  
  <p>Lets suppose that we have a fnc:  </p>
  
  <pre><code>void delete(int value);  
  </code></pre>
  
  <p>And now, am I suppose to describe scenario when user supplies value of type not convertible to int? It won't even compile, so what's the point? </p>