title: What are some common examples of a Hash Table?
body: <p>I was just wondering if there were some "standard" examples that everyone uses as a basis for explaining the nature of problem that requires a Hash table. What are some well-known problems in the real world that can see great benefits from using a Hash table?</p>
  
  <p>*<strong>EDIT: also, a little background or explanation as to why the problem's nature benefits with a Hash Table would be of help! Thanks</strong></p>