diff --git a/str.go b/str.go
index 9bbebab..c77b0e7 100644
--- a/str.go
+++ b/str.go
@@ -3,16 +3,8 @@
 package str
 
 import (
-	"container/list"
-	"encoding/json"
-	"errors"
-	"fmt"
 	"math/rand"
-	"os"
-	"regexp"
-	"runtime"
 	"strings"
-	"syscall"
 	"time"
 )
 
@@ -97,7 +89,6 @@ func KeysString(imap interface{}) string {
 	return strings.Join(keys, ",")
 }
 
-
 //// CHARSTRING   string = "" //will initialize by init function
 //// func init() {
 //// 	NUMBERSTRING = "0123456789"