Speedup ScanSlice

internal/proto/scan.go

@@ -122,7 +122,7 @@ func ScanSlice(data []string, slice interface{}) error {
 
 	for i, s := range data {
 		elem := internal.SliceNextElem(v)
-		if err := Scan([]byte(s), elem.Addr().Interface()); err != nil {
+		if err := Scan(internal.StringToBytes(s), elem.Addr().Interface()); err != nil {
 			return fmt.Errorf("redis: ScanSlice(index=%d value=%q) failed: %s", i, s, err)
 		}
 	}

internal/safe.go

@@ -5,3 +5,7 @@ package internal
 func BytesToString(b []byte) string {
 	return string(b)
 }
+
+func StringToBytes(s string) []byte {
+	return []byte(s)
+}

internal/unsafe.go

@@ -9,6 +9,19 @@ import (
 
 func BytesToString(b []byte) string {
 	bytesHeader := (*reflect.SliceHeader)(unsafe.Pointer(&b))
-	strHeader := reflect.StringHeader{bytesHeader.Data, bytesHeader.Len}
+	strHeader := reflect.StringHeader{
+		Data: bytesHeader.Data,
+		Len:  bytesHeader.Len,
+	}
 	return *(*string)(unsafe.Pointer(&strHeader))
 }
+
+func StringToBytes(s string) []byte {
+	sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	bh := reflect.SliceHeader{
+		Data: sh.Data,
+		Len:  sh.Len,
+		Cap:  sh.Len,
+	}
+	return *(*[]byte)(unsafe.Pointer(&bh))
+}