func (z *zset) Range(r1, r2 int) []string {
if r1 < 1 {
r1 = 1
}
if r2 < 1 {
r2 = 1
}
var reverse, rangelen int
if r1 <= r2 {
reverse = 0
rangelen = r2 - r1 + 1
} else {
reverse = 1
rangelen = r1 - r2 + 1
}
node := C.slGetNodeByRank(z.sl, C.ulong(r1))
result := make([]string, 0, rangelen)
rr := C.int(reverse)
for n := 0; node != nil && n < rangelen; {
result = append(result, C.GoStringN(node.obj.ptr, C.int(node.obj.length)))
node = C.getNextNode(node, rr)
n++
}
return result
}
func (z *zset) RangeByScore(s1, s2 float64) []string {
var reverse int
var node *C.skiplistNode
cs1, cs2 := C.double(s1), C.double(s2)
if s1 <= s2 {
reverse = 0
node = C.slFirstInRange(z.sl, cs1, cs2)
} else {
reverse = 1
node = C.slLastInRange(z.sl, cs2, cs1)
}
result := make([]string, 0)
rr := C.int(reverse)
for node != nil {
if reverse == 1 {
if node.score < cs2 {
break
}
} else {
if node.score > cs2 {
break
}
}
result = append(result, C.GoStringN(node.obj.ptr, C.int(node.obj.length)))
node = C.getNextNode(node, rr)
}
return result
}