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In-Reply-To: <52AA1D9C.9010306@ajf.me>
Date: Thu, 12 Dec 2013 13:32:51 -0800
Cc: Adam Harvey <aharvey@php.net>,
 PHP internals <internals@lists.php.net>
Message-ID: <02678ACF-D1F7-44ED-A750-4D9ABEF6956C@rtin.so>
References: <52AA1649.2090601@ajf.me> <CADajX4At9fujWZrTxAT5SivbhHWGdj2NewJ65Qd_rT-y13H+pg@mail.gmail.com> <52AA1D9C.9010306@ajf.me>
To: Andrea Faulds <ajf@ajf.me>
Subject: Re: [PHP-DEV] [PROPOSAL] Alphanumeric decrement
From: php_m@rtin.so (Martin Amps)

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This topic has been discussed before, see =
http://marc.info/?l=3Dphp-internals&m=3D137415522724276&w=3D1 for the =
thread

On Dec 12, 2013, at 12:33 PM, Andrea Faulds <ajf@ajf.me> wrote:

>=20
>=20
> On 12/12/13 20:19, Adam Harvey wrote:
>>=20
>> I wonder if we'd want to warn when 'a' decrements to 0, since it's a
>> somewhat unintuitive behaviour. (Also, since Perl will decrement 'a'
>> to -1 and Perl was the original inspiration, do we want to decrement
>> to -1 as well for consistency?)
>>=20
>=20
> Ooh, I didn't know about Perl's -1 behaviour. That might be a better =
idea, since "z" becoming "aa" suggests that "a" is functions more like 0 =
here than 1. That, or the warning you suggest.
>=20
> Also, I forgot to mention in my original post, but there is another =
thing changed by this patch. At present, when decrementing a string, it =
is treated as an integer zero if it is empty. This patch also removes =
that check. This brings incrementing into line with decrementing. "" =
would increment to "1" and decrement to "-1", while at present it =
decrements to -1 (the integer).
> --=20
> Andrea Faulds
> http://ajf.me/
>=20
> --=20
> PHP Internals - PHP Runtime Development Mailing List
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>=20


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