Chapter 9: List Widgets section in the book is missing the subclassing section required for the code to even compile (e.g. impl ObjectImpl for IntegerObject {}
#[glib::derived_properties] is also never mentioned so even if people figure out the code required from the subclassing section they will be greeted by a runtime panic because #[glib::derived_properties] is not in Chapter 5.2 either.
Bug description
Chapter 9: List Widgets section in the book is missing the subclassing section required for the code to even compile (e.g.
impl ObjectImpl for IntegerObject {}#[glib::derived_properties]is also never mentioned so even if people figure out the code required from the subclassing section they will be greeted by a runtime panic because#[glib::derived_properties]is not in Chapter 5.2 either.