sort.go

package clientv3

type SortTarget int

type SortOrder int

const (

    SortNone SortOrder = iota

    SortAscend

    SortDescend

)

const (

    SortByKey SortTarget = iota

    SortByVersion

    SortByCreateRevision

    SortByModRevision

    SortByValue

)

type SortOption struct {

    Target SortTarget

    Order  SortOrder

}

sort.go

原文：http://www.cnblogs.com/zhangboyu/p/7452697.html