title: Is there a version of the class Tuple whose Items properties are not readonly and can be set?
body: <p>I want to know whether there is a built-in version of the class <code>Tuple</code> whose Items properties are not <code>readonly</code> and can be set.</p>
  
  <p>Or can someone provide me such a version?</p>
  
  <p>I am searching for a solution that implements the base functions of the Tuple class, (<code>Equals</code>, <code>GetHashCode</code>)</p>