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In-Reply-To: <CAFMT4NrkXtAcqzbQqt1OZiz+-U-Npo8xDbTr6rO1xNC72y8Mpw@mail.gmail.com>
Date: Mon, 25 Jun 2018 07:47:32 -0400
Message-ID: <CAHFNTwchoLJMTcEUeASRe5HwO0bu=6rmVAAgmSWPqQ5--upH5A@mail.gmail.com>
To: levim@php.net
Cc: internals@lists.php.net
Content-Type: multipart/alternative; boundary="0000000000001d5cfe056f75f352"
Subject: Re: [PHP-DEV] Equality and relative ordering of objects
From: rtheunissen@php.net (Rudi Theunissen)

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Content-Type: text/plain; charset="UTF-8"

>
> Java has .equals and .compareTo; these operations are separate. In
> Java neither integrates with operators.


Yeah that's right. I was just pointing out that Java's == always checks
against
the reference and you can't override it (so it's like PHP's ===). Their
.equals()
method is like PHP's ==.

I agree that it's better to separate the two operations, which is why the
first message
in this thread talked about __equals and __compareTo. However, when I
started
implementing it, I couldn't see a nice way to separate them internally as
everything
goes through `compare_function`.

On Sun, 24 Jun 2018 at 23:31, Levi Morrison <levim@php.net> wrote:

> On Sun, Jun 24, 2018 at 2:31 PM Rudi Theunissen <rtheunissen@php.net>
> wrote:
> >>
> >> Other languages (most? all?) separate equality and ordering for this
> reason.
> >
> >
> > Java doesn't really separate them. Their `==` always checks object
> reference so is like PHP's ===.
> > But they do have the .equals() method on all objects (our ==) and the
> collections use that for equality.
>
> Java has .equals and .compareTo; these operations are separate. In
> Java neither integrates with operators.
>

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