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Date: Fri, 23 Feb 2018 15:47:08 +0100
Message-ID: <CANUQDCj-4RTKp1Ax-3S5J8sjjDXk5e=CcfEn0Dm6PEq9qT2y2w@mail.gmail.com>
To: =?UTF-8?Q?Silvio_Mariji=C4=87?= <marijic.silvio@gmail.com>
Cc: Paul Jones <pmjones88@gmail.com>, PHP Internals List <internals@lists.php.net>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [PHP-DEV][RFC][DISCUSSION] Immutability
From: me@kelunik.com (Niklas Keller)

Hey,

> I do have rough idea how to go about arrays possibly without recursive
> scan, I have to try couple of things, it could work if some checks are
> moved to zval level. For now it is in the future scope unless I manage to
> handle the within week or two.

What's the issue with a one-time runtime check on assignment?

> First two proposals are valid points. Regarding disabling constructor, that
> would fail as soon as you try to write properties in constructor since
> object is already "locked".

You lock the object after the constructor has been called, not
afterwards. If you don't do that, your objects won't be immutable.

I like the RFC, but generally I think value objects that are passed
by-value instead of by-reference are the better way to solve the
problem.

Regards, Niklas