title: How to replace 2 string letters from a String in Dart?
body: <pre><code>var string = '12345';
  </code></pre>
  
  <p>I want to replace <code>2</code> and <code>4</code> with <code>0</code>, so I tried:</p>
  
  <pre><code>var output = string.replaceAll('2, 4', '0') // doesn't work
  </code></pre>
  
  <p>I am not sure if I need to use <code>RegExp</code> for this small stuff? Is there any other way to solve this?</p>