add core/error/util files

2026-05-20 17:54:30 +08:00 · 2020-10-17 17:22:10 +08:00
parent e5953c9f17
commit 6ad0a02d44
25 changed files with 917 additions and 0 deletions
@@ -0,0 +1,16 @@
+package utils
+
+import (
+	"crypto/rand"
+	"math/big"
+)
+
+func GetRandomInteger(max int) (int, error) {
+	result, err := rand.Int(rand.Reader, big.NewInt(int64(max)))
+
+	if err != nil {
+		return 0, err
+	}
+
+	return int(result.Int64()), nil
+}