title: iOS - Change the multiplier of constraint by Swift
body: <p>How to change the multiplier of a constraint by using Swift.</p>
  
  <pre><code>someConstraint.multiplier = 0.6 // error: 'multiplier' is get-only property
  </code></pre>
  
  <p>I would like to know how to change the multiplier in code (Swift).</p>