title: What's the difference between SortedList and SortedDictionary?
body: <p>Is there any real practical difference between a <a href="https://msdn.microsoft.com/en-us/library/ms132319(v=vs.110).aspx" rel="noreferrer"><code>SortedList&lt;TKey,TValue&gt;</code></a> and a <a href="https://msdn.microsoft.com/en-us/library/f7fta44c(v=vs.110).aspx" rel="noreferrer"><code>SortedDictionary&lt;TKey,TValue&gt;</code></a>?  Are there any circumstances where you would specifically use one and not the other?</p>