Roger Johansson wrote:
> but this screws up the scemantics
> 
> "<<" is append... and you cant "append" something in a hash , there is 
> no way to add anything to the end of a hash since items are inserted 
> based on hashed index.

That doesn't seem to stop Set#<< :

irb(main):001:0> s = Set[1,2,3]
=> #<Set: {1, 2, 3}>
irb(main):002:0> s << 4
=> #<Set: {1, 2, 3, 4}>


-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407