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rnd

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charlie
2022-03-28 00:10:16 +08:00
parent 88a3f5ed09
commit abeabeeb61
1 changed files with 10 additions and 10 deletions
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20
rand/rand.go
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@ -22,6 +22,15 @@ const (
_ = allChars + "/+" _ = allChars + "/+"
) )
var (
randSource mrnd.Source = mrnd.NewSource(time.Now().UnixNano())
randLock sync.Mutex
)
func init() {
mrnd.Seed(time.Now().UnixNano())
}
type charScope struct { type charScope struct {
bytes []byte bytes []byte
length int length int
@ -65,9 +74,6 @@ var (
AllChars = StringScope(allChars) // 所有字符 AllChars = StringScope(allChars) // 所有字符
) )
var randSource mrnd.Source = mrnd.NewSource(time.Now().UnixNano())
var randLock sync.Mutex
// 生成指定长度的随机字符串 // 生成指定长度的随机字符串
func (scope *charScope) RandString(length int) string { func (scope *charScope) RandString(length int) string {
n := length n := length
@ -110,11 +116,6 @@ func RandBytes(len int) ([]byte, error) {
return r, err return r, err
} }
// func randNumber(max int64) (int64, error) {
// r, err := rand.Int(rand.Reader, big.NewInt(max+1))
// return r.Int64(), err
// }
func randInt63() int64 { func randInt63() int64 {
var v int64 var v int64
@ -126,6 +127,5 @@ func randInt63() int64 {
} }
func randNumber2(max int) int { func randNumber2(max int) int {
rnd := mrnd.New(randSource) return mrnd.Intn(max)
return rnd.Intn(max)
} }