title: Get and set the field value by passing name
body: <p>I have a field in a class with a random name like:</p>
  
  <pre><code>class Foo {
      public string a2de = "e2"
  }
  </code></pre>
  
  <p>I have the name of this field in another variable like:</p>
  
  <pre><code>string vari = "a2de"
  </code></pre>
  
  <p>Can I get or set the value of field <code>a2de</code> by using the value of <code>vari</code>?</p>
  
  <p>like:</p>
  
  <pre><code>getvar(vari)
  </code></pre>
  
  <p>or</p>
  
  <pre><code>setvar(vari) = "e3"
  </code></pre>