title: Underscore: remove all key/value pairs from an array of object
body: <p>Is there a "smart" underscore way of removing all key/value pairs from an array of object?</p>
  
  <p>e.g. I have following array:</p>
  
  <pre><code>var arr = [
          { q: "Lorem ipsum dolor sit.", c: false },
          { q: "Provident perferendis veniam similique!", c: false },
          { q: "Assumenda, commodi blanditiis deserunt?", c: true },
          { q: "Iusto, dolores ea iste.", c: false },
      ];
  </code></pre>
  
  <p>and I want to get the following:</p>
  
  <pre><code>var newArr = [
          { q: "Lorem ipsum dolor sit." },
          { q: "Provident perferendis veniam similique!" },
          { q: "Assumenda, commodi blanditiis deserunt?" },
          { q: "Iusto, dolores ea iste." },
      ];
  </code></pre>
  
  <p>I can get this working with the JS below, but not really happy with my solutions:</p>
  
  <pre><code>for (var i = 0; i &lt; arr.length; i++) {
      delete arr[i].c;
  };
  </code></pre>
  
  <p>Any suggestions much appreciated.</p>