No trees in the stdlib?

Tom Reed tomreed05 at
Fri Jun 26 01:29:30 EDT 2009

Why no trees in the standard library, if not as a built in? I searched 
the archive but couldn't find a relevant discussion. Seems like a 
glaring omission considering the batteries included philosophy, 
particularly balanced binary search trees. No interest, no good 
implementations, something other reason? Seems like a good fit for the 
collections module. Can anyone shed some light?


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