Re: RFC - Immutable classes

From: Date: Sat, 10 Sep 2016 10:55:01 +0000
Subject: Re: RFC - Immutable classes
References: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15  Groups: php.internals 
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So? Where are we now? CoW is definitely doable and I personally think that it's the best approach because the engine has full control that nothing goes south. I also do not think that it's magic in any way since developers have to add the _immutable_ keyword explicitly to the class. That this modifier modifies the behavior should be obvious, _abstract_ and _interface_ also do that. Since I mention _interface_. I've been thinking about it and I would prefer it if the _immutable_ modifier also works for interfaces. Interfaces are pure abstract classes after all and they are meant to define a contract for implementors. I cannot see any good reason why it should not be allowed to force implementors of an interface to be immutable; same as with abstract classes. Another aspect that we should discuss is how immutable properties should behave in case we decide for CoW. @Larry what do you think about the CoW proposal? -- Richard "Fleshgrinder" Fussenegger

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