diff --git a/sysutils.go b/sysutils.go
index 7892d75..c08832a 100644
--- a/sysutils.go
+++ b/sysutils.go
@@ -33,19 +33,17 @@ func MkInt64(lo32 int32, hi32 int32) int64 {
 	return int64(lo32) + (int64(hi32) << 32)
 }
 
-/*
-func Request(r *http.Request, name string) *XValue {
+func Request(r *http.Request, name string) string {
 	if r.Form == nil {
 		r.ParseForm()
 	}
 	if vs, ok := r.Form[name]; ok {
 		if len(vs) > 0 {
-			return NewXString(vs[0])
+			return vs[0]
 		}
 	}
-	return NewXString("")
+	return ""
 }
-*/
 
 func Response(w* http.ResponseWriter, data string) {
 	(*w).Write([]byte(data))
@@ -99,14 +97,6 @@ func ForceCreateDir(dir string) bool {
 	return true
 }
 
-func TraverseArray(arrayPtr interface{}, callback func(data interface{})) {
-	array := reflect.ValueOf(arrayPtr).Elem()
-	for i := 0; i < array.Len(); i++ {
-		val := array.Index(i).Addr().Interface()
-		callback(val)
-	}
-}
-
 func IsNumberType(v interface{}) bool {
 	switch reflect.TypeOf(v).Kind() {
 	case
diff --git a/timer.go b/timer.go
index ccc4b76..b32e909 100644
--- a/timer.go
+++ b/timer.go
@@ -38,16 +38,26 @@ func (this *XTimer) Init(
 	context interface{},
 	gcTime int32,
 	cacheTimerNum int32)  {
-	initListHeadFunc := func (data interface{}) {
-		head := data.(*ListHead)
+	initListHeadFunc := func (head *ListHead) {
 		head.Init(nil)
 	}
 	initListHeadFunc(&this.freeTimerList)
-	TraverseArray(&this.tv1, initListHeadFunc)
-	TraverseArray(&this.tv2, initListHeadFunc)
-	TraverseArray(&this.tv3, initListHeadFunc)
-	TraverseArray(&this.tv4, initListHeadFunc)
-	TraverseArray(&this.tv5, initListHeadFunc)
+	for i := 0; i < len(this.tv1); i++ {
+		initListHeadFunc(&this.tv1[i])
+	}
+	for i := 0; i < len(this.tv2); i++ {
+		initListHeadFunc(&this.tv2[i])
+	}
+	for i := 0; i < len(this.tv3); i++ {
+		initListHeadFunc(&this.tv3[i])
+	}
+	for i := 0; i < len(this.tv4); i++ {
+		initListHeadFunc(&this.tv4[i])
+	}
+	for i := 0; i < len(this.tv5); i++ {
+		initListHeadFunc(&this.tv5[i])
+	}
+
 	this.timerTick = getTickCount(context)
 	this.context = context
 	this.getTickCount = getTickCount
@@ -60,8 +70,7 @@ func (this *XTimer) UnInit() {
 }
 
 func (this *XTimer) clear() {
-	freeTimerFunc := func (data interface{}) {
-		head := data.(*ListHead)
+	freeTimerFunc := func (head *ListHead) {
 		for !head.Empty() {
 			timerList := head.FirstEntry().(*XTimerList)
 			this.detachTimer(timerList)
@@ -71,11 +80,21 @@ func (this *XTimer) clear() {
 		}
 	}
 	freeTimerFunc(&this.freeTimerList)
-	TraverseArray(&this.tv1, freeTimerFunc)
-	TraverseArray(&this.tv2, freeTimerFunc)
-	TraverseArray(&this.tv3, freeTimerFunc)
-	TraverseArray(&this.tv4, freeTimerFunc)
-	TraverseArray(&this.tv5, freeTimerFunc)
+	for i := 0; i < len(this.tv1); i++ {
+		freeTimerFunc(&this.tv1[i])
+	}
+	for i := 0; i < len(this.tv2); i++ {
+		freeTimerFunc(&this.tv2[i])
+	}
+	for i := 0; i < len(this.tv3); i++ {
+		freeTimerFunc(&this.tv3[i])
+	}
+	for i := 0; i < len(this.tv4); i++ {
+		freeTimerFunc(&this.tv4[i])
+	}
+	for i := 0; i < len(this.tv5); i++ {
+		freeTimerFunc(&this.tv5[i])
+	}
 }
 
 func (this *XTimer) Update() {