这个就不多做说明拉,就是快速高效得生成随机字符串,当然,直接引用 repo 也可以,但是这么简单的事情,一个函数就可以搞定了:

// made by https://liqiang.io
var src = rand.NewSource(time.Now().UnixNano())

const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
const (
	letterIdxBits = 6                    // 6 bits to represent a letter index
	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
)

func randString(n int) *string {
	b := make([]byte, n)
	for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
		if remain == 0 {
			cache, remain = src.Int63(), letterIdxMax
		}
		if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
			b[i] = letterBytes[idx]
			i--
		}
		cache >>= letterIdxBits
		remain--
	}

	return (*string)(unsafe.Pointer(&b))
}

简单看一下:

// main.go made by https://liqiang.io
func main() {
	fmt.Printf("rand string: %s\n", *randString(10))
}

结果很简单:

# go run main.go
rand string: VGeLolNnmL