some work on container iteration #4835
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the map types should implement BaseIter instead
bors
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Feb 8, 2013
This adds a `BaseIter` impl to `PriorityQueue`, `TreeMap`, `LinearMap` and `SmallIntMap`, and introduces a `ReverseIter` trait + implementations for `TreeMap`, `TreeSet` and `SmallIntMap`.
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This adds a
BaseIterimpl toPriorityQueue,TreeMap,LinearMapandSmallIntMap, and introduces aReverseItertrait + implementations forTreeMap,TreeSetandSmallIntMap.