title: How to check if a specific object already exists in an array before adding it
body: <p>I have this array: </p>
  
  <pre><code>[{"name": "Olvier", "id": 123 }, {"name": "Olvier", "id": 124 }]
  </code></pre>
  
  <p>Now my goal is to prevent adding the same object again to the array:</p>
  
  <pre><code>{"name": "Olvier", "id": 123 }
  </code></pre>
  
  <p>Is there a Method to do this?</p>