Speedup ScanSlice

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))
+}