fmt.Sprintf strconv.Itoa 效率实验 

 1 package main
 2 
 3 import (
 4     "fmt"
 5     "strconv"
 6     "time"
 7 )
 8 
 9 const LOOP = 100000
10 
11 var num int64 = 10
12 
13 func main() {
14     startTime := time.Now()
15     for i := 0; i < LOOP; i++ {
16         fmt.Sprintf("%d", i)
17     }
18     fmt.Printf("fmt.Sprintf taken: %v\n", time.Since(startTime))
19 
20     startTime = time.Now()
21     for i := 0; i < LOOP; i++ {
22         strconv.Itoa(i)
23     }
24     fmt.Printf("strconv.FormatInt taken: %v\n", time.Since(startTime))
25 }

得到的结果为

fmt.Sprintf taken: 23.0013ms

strconv.FormatInt taken: 4.0002ms

 

参考：http://deanthompson.github.io/tag/golang.html

posted @ 2014-11-05 20:15  yumuxu  阅读(1858)  评论(0)  编辑  收藏  举报