why LowerBound not reponse ReverseIterator?

[liyikun]

how to get list for LowerBound and UpperBound ?

func Less(x, y treemap.Key) bool { return x.(uint32) < y.(uint32) }

func GetIterator(iterator treemap.ForwardIterator) (keys []uint32, values []uint32) {
	for it := iterator; it.Valid(); it.Next() {
		keys = append(keys, it.Key().(uint32))
		values = append(values, it.Value().(uint32))
	}
	return
}

func TestSortedMap(t *testing.T) {

	testmap := treemap.New(Less)

	for i, v := range []uint32{10, 20, 30, 20, 15, 5} {
		testmap.Set(uint32(i+1), v)
	}

	level := uint32(2)

	keys1, _ := GetIterator(testmap.LowerBound(level))

	keys2, _ := GetIterator(testmap.UpperBound(level))

	t.Log("success")
	t.Log(keys1, keys2)
}

keys1 return [2,3,4,5,6]
keys2 return [3,4,5,6]

i hope keys1 return [1] , i try use it.Prev in GetIterator, but it.Valid isn't work in this case.

how can i use?

[liyikun]

i think the LowerBound api should response ReverseIterator

[liyikun]

@ncw

[ncw]

Maybe @igrmk can help?