title: What are the () at the end of a dictionary?
body: <p>I'm new to C#, but I never understood what the () at the end of a dictionary means!</p>
  
  <p>Let's say I have a class, and I declare a field like this:</p>
  
  <pre><code>public Dictionary&lt;InventoryType, Inventory&gt; Inventory { get; private set; }
  </code></pre>
  
  <p>And then, on the constructor, I have:</p>
  
  <pre><code>Inventory = new Dictionary&lt;InventoryType, Inventory&gt;(6);
  </code></pre>
  
  <p>What does the 6 at the end means? Thank you!</p>