优化convert

convert.go

@@ -34,6 +34,7 @@ type RawBytes []byte
 
 var errNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error
 
+// ConvertAssign ...
 // convertAssign copies to dest the value in src, converting it if possible.
 // An error is returned if the copy would result in loss of information.
 // dest should be a pointer type.