Re: Readonly properties - immutability by default

> On Jul 16, 2021, at 6:12 AM, Bruce Weirdan <weirdan@gmail.com> wrote: > > On Fri, Jul 16, 2021 at 9:45 AM Eugene Sidelnyk <zsidelnik@gmail.com> wrote: > >> Readonly properties are really useful for DDD, where everything is going to >> be immutable. It promotes best practices. However for people to use it, >> syntax should be concise and brief. > > If every property of the class is readonly it would probably be better > to declare that with a class modifier. > > E.g. > > ```php > readonly class Entity { > public int $count; > public string $data; > } > ``` Having a "readonly" class where the properties are read-only by default makes sense to me, but maybe the better way to do it is with an attribute? #[Readonly] class Entity { public int $count; public string $data; } OTOH, that would be inconsistent with using readonly as a keyword for properties. -Mike P.S. Maybe readonly properties should be implemented with an attribute instead of a keyword? But then that would be opening a can of worms...