James Edward Gray II wrote:
> On Nov 3, 2009, at 8:28 PM, Cameron McBride wrote:
> 
>> I still don't understand why NArray isn't in the stdlib.  It'd be
>> great to "bless" a simple and elegant library like this to build off
>> of (for specific C extensions, etc).
> 
> Yeah, I've always wished it and RBTree could be added to the standard
> library.

RBTree doesn't support Ruby 1.9 .
But it really a library for libraries;
abundled library, SortedSet, uses it.

Moreover to bundle such data structure library encourages Ruby users
to use appropriate data structure.
For example, people who should use RBTree,
but they are just about to play with Hash and Array.
# bundled library by political reason

If someone has responsibility for bundled RBTree in 1.9,
I agree with it.

-- 
NARUSE, Yui  <naruse / airemix.jp>