title: Executing operations
body: <p>Which is a better approach to run operations</p>
  
  <ol>
  <li>Use Delegate</li>
  <li>Use Action</li>
  <li>Use Predicate</li>
  <li>Use Func</li>
  </ol>
  
  <p>Which once is the best in terms of performance, memory and code maintainability.</p>