Pelle Wrote: > On 05/20/2010 03:22 PM, Steven Schveighoffer wrote: > > One thing I just thought of -- in dcollections, similar types can be > > compared to one another. For example, you can check to see if a HashSet is > > equal to a TreeSet. But that would not be possible without interfaces. > > > > -Steve > > I'm sorry, but I think that's a misfeature. In my opinion, a tree is not > equal to a hash table, ever.
They aren't trees and hashtables, they are sets. The "quick lookup" feature is implemented via a hashtable or tree. Basically, a set is defined by the exact elements in it, regardless of order. Comparing two sets for equality should always be possible. -Steve
