title: String is null or empty
body: <p>Ok, here are some easy points. PyBinding came with this script:</p>
  
  <pre><code>def IsNotNull(value):
      return value is not None
  </code></pre>
  
  <p>It is close, but what I want is this.</p>
  
  <pre><code>bool IsNotNullOrEmpty(string value) {
      return (value != null) &amp;&amp; (value.Length &gt; 0 );
  }
  </code></pre>