title: Array.map rendering the given data twice in React-Native
body: <p>I am having the array of data which is rendered using map in React Native.But the component is rendering the data twice throwing the exception</p>
  <blockquote>
  <p>Warning: Each child in a list should have a unique &quot;key&quot; prop.</p>
  </blockquote>
  <p>Here is my code.</p>
  <pre><code>  const test = [&quot;Test1&quot;,&quot;Test2&quot;,&quot;Test3&quot; ]
  </code></pre>
  <pre><code>&lt;View&gt;
   {test.map(item=&gt;&lt;Text&gt;{item}&lt;/Text&gt; )}
  &lt;/View&gt;
  </code></pre>