title: Flutter get list values to another list
body: <p>I have a <code>List</code> in the following format:</p>
  
  <pre><code>List&lt;ImageCollections&gt; collectionlist;
  </code></pre>
  
  <p>It looks like this:</p>
  
  <pre><code>collectionlist = [
    { collectionname: 'abc', srcimage: url1, collectionimgnumber: 5, hreflink: link1 },
    { collectionname: 'xyz', srcimage: url2, collectionimgnumber: 4, hreflink: link2 },
    ...
  ];
  </code></pre>
  
  <p>Is there a way I can create a new <code>List</code> containing only the <code>srcimage</code> of each entry?</p>
  
  <p>The new list should look like this:</p>
  
  <pre><code>newList = [ url1, url2, ... ];
  </code></pre>