mozilla/rust — pull request #8572 by sfackler (2013-08-17 05:50:33+00:00)
Title: Deleted fun_treemap

@thestinger and I talked about this in IRC. There are a couple of use
cases for a persistent map, but they aren't common enough to justify
inclusion in libextra and vary enough that they would require multiple
implementations anyways.

In any case, fun_treemap in its current state is basically useless.