title: Whats the memory cost of using all static methods in a struct/class?
body: <p>Does creating a lot of <code>static</code>/<code>class</code> functions in Swift <code>class</code>/<code>struct</code> result in unreleased memory when the iOS app is running? Is it a good practice to use <code>static</code>/<code>class</code> functions for Utility classes? </p>
  
  <p>How different is the memory cost between using <code>static</code>/<code>class</code> functions in Swift and using </p>
  
  <pre><code>+ (void) someMethod;
  </code></pre>
  
  <p>in Objective-C?</p>