Which is faster/more efficient: Dictionary or Dictionary?

Question

Are enum types faster/more efficient than string types when used as dictionary keys?

IDictionary or IDict         


        

Answer 1

Use enum to get cleaner and nicer code, but remember to provide a custom comparer if you are concerned with performance: http://ayende.com/Blog/archive/2009/02/21/dictionaryltenumtgt-puzzler.aspx .