title: Search in Array of Dictionaries by key name
body: <p>I have an array of dictionary, in which i need to search and return matching Dict</p>
  
  <pre><code>let foo = [
      ["selectedSegment":0, "severity":3, "dataDictKey": "critical"],
      ["selectedSegment":1, "severity":2, "dataDictKey": "major"],
      ["selectedSegment":2, "severity":1, "dataDictKey": "minor"],
  ]
  </code></pre>
  
  <p>In <code>foo</code>, how can i find for <code>severity:2</code> and get matching Dict ?</p>