v1.0.0

v1.0.0

utils/rand.go

@@ -0,0 +1,42 @@
+package utils
+
+import (
+	"math/rand"
+	"time"
+)
+
+// RandString - 生成随机字符串
+func RandString(length int, chars ...string) (result string) {
+
+	var charset string
+
+	if IsEmpty(chars) {
+		charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	} else {
+		charset = chars[0]
+	}
+	var seededRand = rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	item := make([]byte, length)
+	for i := range item {
+		item[i] = charset[seededRand.Intn(len(charset))]
+	}
+
+	return string(item)
+}
+
+// RandInt - 生成随机整数
+func RandInt(max int, min ...int) (result int) {
+	if IsEmpty(min) {
+		min = []int{0}
+	}
+	if max <= min[0] {
+		// 交换两个数
+		max, min[0] = min[0], max
+	}
+	if max == min[0] {
+		return max
+	}
+	rand.Seed(time.Now().UnixNano())
+	return rand.Intn(max-min[0]) + min[0]
+}