title: How to edit an item in a state array?
body: <p>So here is my state:</p>
  
  <pre><code>this.state = {
    ids: ['A', 'E', 'C']
  };
  </code></pre>
  
  <p>How would I go about modifying the state so that 'E' at index 1 is changed to 'B'?
  Like for example:</p>
  
  <pre><code>this.setState({
    ids[1]: 'B'
  });
  </code></pre>
  
  <p>How would this be done?</p>