Consider following definition: |class Node |{ | union | { | protected Rect _rect; | const struct | { | short x, y; | ushort width, height; | } | } | setRect(...) { ... } |}
The point is to have a readonly view of data (x, y, width, height), protected mutable view of same data (_rect), and an interface to set it publicly (setRect).
1. Is this declaration is legal? (const and mutable definitions in one union) 2. Is there a difference between const and invariant struct? (I guess it should)
The current implementation seems yielding undefined behavior in this case. If I set initial const values in constructor everything works as expected. If I set initial const values in definition, the whole union seems to be immutable, eg. setting ``_rect`` do not have an effect.
-- serg.