title: How can I check wether an array contains any item or is completely empty?
body: <p>If I define an integer array:</p>
  
  <pre><code>int[] a = new int[13];
  </code></pre>
  
  <p>and I do not insert any item into it, how can I know whether the array a contains any items or is completely empty?
  Do I have to iterate through all the a.Length indices?
  In a list</p>
  
  <pre><code>List&lt;int&gt; b = new List&lt;int&gt;();
  </code></pre>
  
  <p>if I check:</p>
  
  <pre><code>if(b.Count == 0)
  {
      // The list does not contain any items.
  }
  </code></pre>
  
  <p>Is there an equivalent way to check an array?
  I found on the internet the check if an array is null or empty.
  In my case I know for sure that the array is not null.
  I just wish to know whether it contains any item or not.
  I do not care in which position within the array and also not exactly which item. 
  Thank you very much in advance.</p>