Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:58149
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 74.125.82.170 as permitted sender)
Received-SPF: pass (google.com: domain of keisial@gmail.com designates 10.180.83.97 as permitted sender) client-ip=10.180.83.97;
Message-ID: <4F4BB01A.2010007@gmail.com>
Date: Mon, 27 Feb 2012 17:32:26 +0100
User-Agent: Thunderbird
MIME-Version: 1.0
To: John Crenshaw <johncrenshaw@priacta.com>
CC: Kris Craig <kris.craig@gmail.com>, 
 Arvids Godjuks <arvids.godjuks@gmail.com>,
 "internals@lists.php.net" <internals@lists.php.net>
References: <CAG=uTXFQUY=EDb=ut97nNSm+m8sMQNRK-9YPcfb2quaoS246-g@mail.gmail.com> <fe9c203ff43ec075a6f1a405053889ec.squirrel@www.l-i-e.com> <CAKOpQSwqddd1YUeuTGOQWX+V9SA_is-2UE1TOXfqt1YQoz2upw@mail.gmail.com> <CAG=uTXGTCxaEEOdt7cz81DT7vOOvMm1P0jdrgMX0CpY4e86t+Q@mail.gmail.com> <CAKOpQSy7r063FuoXpAy_7nsaBpz08LrVnz0zpa6CDF7fF-Tu6g@mail.gmail.com> <4F496818.8000405@sugarcrm.com> <CAKOpQSyewRGH8nZhXAZf9+hh1pU1oNGfZCn5rbfPW8Ydy9aH9g@mail.gmail.com> <4F4982BF.8090102@sugarcrm.com> <CAKOpQSwo0xy4tyZQW6zZGeuZgqCEGEqUpbD=iAWfa4TkaeeqrQ@mail.gmail.com> <CAL0xaBFwbmamuNCuakxv9jf2LXQQ4ej4RvFRm_UBD460Sazprg@mail.gmail.com> <CAKOpQSyi2Cpr=rYaWkkJZtyjcDzLVqr5QNUzLza1RQ9q27fA+A@mail.gmail.com> <CAGsnKxa+qqJqy++4pCTrnU1nG_Nf59TyTCpvaQtZSNTu-Byr5w@mail.gmail.com> <CAL0xaBEWmYYH9D7BEpUVEbGgSoP5QPWir8Qo+S4hz+CR53jdxA@mail.gmail.com> <CAKOpQSxmqWUbU-6_aS825mMwpNztHjiQy8WrZ-tJ6jUyhHSYRg@mail.gmail.com> <A633CF2D7C7BED41B41F1E64F25507B8069DC46B65@MAILR001.mail.lan>
In-Reply-To: <A633CF2D7C7BED41B41F1E64F25507B8069DC46B65@MAILR001.mail.lan>
Content-Type: multipart/alternative;
 boundary="------------000106060202030602070805"
Subject: Re: [PHP-DEV] [RFC] Enum proposal (yet another)
From: keisial@gmail.com (=?UTF-8?B?w4FuZ2VsIEdvbnrDoWxleg==?=)

--------------000106060202030602070805
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

On 27/02/12 02:44, John Crenshaw wrote:
> If we can agree on some basic terminology I think it would move things forward considerably. I propose these terms:
> - "Strict Typing" means the super strict old C style typing that has been proven to be ridiculous in this environment because of the obvious problems inherent in the fact that almost every input is a string.
> - "Weak Typing" means types in the same sense that the PHP documentation uses types (for example, the docs indicate substr(string, integer), and substr(12345, "2") == "345".)
> - "No Scalar Typing" should be used to indicate the current system (where there is no provision for hinting at scalar types.)
I'd add a fourth class, in between weak and strict typing, where a
diagnostic is issued when the requested conversion doesn't make sense.
Let's call it sane weak typing. The following would work:

function score(int $number) {
 global $points, $total;
  $points += $number;
  $total++;
}

score(42);
score(1.0);
score("7");


but these would generate a diagnostic:
score(" Mary had a little lamb");
score( array(3, 27, 45) );
score( new stdclass );
score( fopen("myfile.txt", "w") );

(note that in some of these cases, the += operator would already produce
a fatal error)


--------------000106060202030602070805--