title: How to get a specific map out of a list of maps that has a bigger than or smaller than value than the rest?
body: <p>I'm working on a app where I retrieve json data via http, and I have made the listview.builder and all of that. Now I want to make a filter button to show the lists that only have values below a certain integer.
  for example:
  my list of maps goes something like this</p>
  <pre><code>[
    {
      &quot;name&quot;: &quot;jess&quot;,
      &quot;age&quot;: &quot;28&quot;,
      &quot;job&quot;: &quot;doctor&quot;
    },
    {
      &quot;name&quot;: &quot;jack&quot;,
      &quot;age&quot;: &quot;30&quot;,
      &quot;job&quot;: &quot;jobless&quot;
    },
    {
      &quot;name&quot;: &quot;john&quot;,
      &quot;age&quot;: &quot;24&quot;,
      &quot;job&quot;: &quot;doctor&quot;
    },
    {
      &quot;name&quot;: &quot;sara&quot;,
      &quot;age&quot;: &quot;23&quot;,
      &quot;job&quot;: &quot;teacher&quot;
    }...etc
  ]
  </code></pre>
  <p>Now I want to press that filter button and in my listview show only those that are below or above the age of 25.</p>