Re: Immutable modifier

Chris, On Mon, Nov 16, 2015 at 4:15 AM, Chris Riley <t.carnage@gmail.com> wrote: > Hi, > > There has been a lot of interest recently (eg psr-7) in immutable data. I'm > considering putting an RFC together to add language support for immutables: > > immutable class Foo { > public $bar; > public function __construct($bar) { > $this->bar = $bar; > } > } > > Immutable on a class declaration makes all (maybe only public?) properties > of the class immutable after construct; assigning to a property would > result in a Fatal error. > > class Foo { > public $bar; > immutable public $baz; > } > > Immutable on a property makes the property immutable once it takes on a > none null value. Attempts to modify the property after this results in a > fatal error. Beyond syntax/whatever, I would suggest finding a method to do it internally. That's going to be the biggest problem in my experience (finding some way of doing it efficiently)... Anthony