Add KI64Pair(s)

This commit is contained in:
Jae Kwon 2017-12-25 11:40:05 -08:00
parent b70ae4919b
commit f2a8e95248
1 changed files with 30 additions and 0 deletions

View File

@ -5,6 +5,9 @@ import (
"sort"
)
//----------------------------------------
// KVPair
type KVPair struct {
Key Bytes
Value Bytes
@ -28,3 +31,30 @@ func (kvs KVPairs) Less(i, j int) bool {
}
func (kvs KVPairs) Swap(i, j int) { kvs[i], kvs[j] = kvs[j], kvs[i] }
func (kvs KVPairs) Sort() { sort.Sort(kvs) }
//----------------------------------------
// KI64Pair
type KI64Pair struct {
Key Bytes
Value int64
}
type KI64Pairs []KI64Pair
// Sorting
func (kvs KI64Pairs) Len() int { return len(kvs) }
func (kvs KI64Pairs) Less(i, j int) bool {
switch bytes.Compare(kvs[i].Key, kvs[j].Key) {
case -1:
return true
case 0:
return kvs[i].Value < kvs[j].Value
case 1:
return false
default:
panic("invalid comparison result")
}
}
func (kvs KI64Pairs) Swap(i, j int) { kvs[i], kvs[j] = kvs[j], kvs[i] }
func (kvs KI64Pairs) Sort() { sort.Sort(kvs) }