diff --git a/internal/tools/monitor/core/storekit/clickhouse/table/meta/cache.go b/internal/tools/monitor/core/storekit/clickhouse/table/meta/cache.go
index 3017f093975..a41782440d7 100644
--- a/internal/tools/monitor/core/storekit/clickhouse/table/meta/cache.go
+++ b/internal/tools/monitor/core/storekit/clickhouse/table/meta/cache.go
@@ -29,9 +29,7 @@ func (p *provider) setCache() error {
 	expire := 3 * p.Cfg.ReloadInterval
 
 	var caches []MetricMeta
-	for _, v := range meta {
-		caches = append(caches, v)
-	}
+	caches = append(caches, meta...)
 
 	text, err := json.MarshalToString(caches)
 
diff --git a/internal/tools/monitor/extensions/loghub/exporter/output_test.go b/internal/tools/monitor/extensions/loghub/exporter/output_test.go
index 4ea61705922..2a768dd816a 100644
--- a/internal/tools/monitor/extensions/loghub/exporter/output_test.go
+++ b/internal/tools/monitor/extensions/loghub/exporter/output_test.go
@@ -360,9 +360,7 @@ func (m *MockLogger) EXPECT() *MockLoggerMockRecorder {
 func (m *MockLogger) Debug(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Debug", varargs...)
 }
 
@@ -376,9 +374,7 @@ func (mr *MockLoggerMockRecorder) Debug(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Debugf(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Debugf", varargs...)
 }
 
@@ -393,9 +389,7 @@ func (mr *MockLoggerMockRecorder) Debugf(arg0 interface{}, arg1 ...interface{})
 func (m *MockLogger) Error(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Error", varargs...)
 }
 
@@ -409,9 +403,7 @@ func (mr *MockLoggerMockRecorder) Error(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Errorf(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Errorf", varargs...)
 }
 
@@ -426,9 +418,7 @@ func (mr *MockLoggerMockRecorder) Errorf(arg0 interface{}, arg1 ...interface{})
 func (m *MockLogger) Fatal(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Fatal", varargs...)
 }
 
@@ -442,9 +432,7 @@ func (mr *MockLoggerMockRecorder) Fatal(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Fatalf(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Fatalf", varargs...)
 }
 
@@ -459,9 +447,7 @@ func (mr *MockLoggerMockRecorder) Fatalf(arg0 interface{}, arg1 ...interface{})
 func (m *MockLogger) Info(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Info", varargs...)
 }
 
@@ -475,9 +461,7 @@ func (mr *MockLoggerMockRecorder) Info(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Infof(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Infof", varargs...)
 }
 
@@ -492,9 +476,7 @@ func (mr *MockLoggerMockRecorder) Infof(arg0 interface{}, arg1 ...interface{}) *
 func (m *MockLogger) Panic(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Panic", varargs...)
 }
 
@@ -508,9 +490,7 @@ func (mr *MockLoggerMockRecorder) Panic(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Panicf(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Panicf", varargs...)
 }
 
@@ -553,9 +533,7 @@ func (mr *MockLoggerMockRecorder) Sub(arg0 interface{}) *gomock.Call {
 func (m *MockLogger) Warn(arg0 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{}
-	for _, a := range arg0 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg0...)
 	m.ctrl.Call(m, "Warn", varargs...)
 }
 
@@ -569,9 +547,7 @@ func (mr *MockLoggerMockRecorder) Warn(arg0 ...interface{}) *gomock.Call {
 func (m *MockLogger) Warnf(arg0 string, arg1 ...interface{}) {
 	m.ctrl.T.Helper()
 	varargs := []interface{}{arg0}
-	for _, a := range arg1 {
-		varargs = append(varargs, a)
-	}
+	varargs = append(varargs, arg1...)
 	m.ctrl.Call(m, "Warnf", varargs...)
 }
 
diff --git a/internal/tools/pipeline/pkg/taskerror/ordered.go b/internal/tools/pipeline/pkg/taskerror/ordered.go
index 9b1ebfe58a3..d4fd3718de9 100644
--- a/internal/tools/pipeline/pkg/taskerror/ordered.go
+++ b/internal/tools/pipeline/pkg/taskerror/ordered.go
@@ -42,9 +42,7 @@ func (o OrderedErrors) AppendError(errs ...*Error) OrderedErrors {
 		return o
 	}
 	var ordered OrderedErrors
-	for _, g := range o {
-		ordered = append(ordered, g)
-	}
+	ordered = append(ordered, o...)
 
 	var newOrderedErrs OrderedErrors
 	now := time.Now()
diff --git a/pkg/strutil/strutil.go b/pkg/strutil/strutil.go
index 44cbbac1a63..485c4d158de 100644
--- a/pkg/strutil/strutil.go
+++ b/pkg/strutil/strutil.go
@@ -393,9 +393,7 @@ func Atoi64(s string) (int64, error) {
 // Map([]string{"Aa", "bB", "cc"}, ToLower, Title) => []string{"Aa", "Bb", "Cc"}
 func Map(ss []string, fs ...func(s string) string) []string {
 	r := []string{}
-	for i := range ss {
-		r = append(r, ss[i])
-	}
+	r = append(r, ss...)
 	r2 := []string{}
 	for _, f := range fs {
 		for i := range r {