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Date: Thu, 13 Feb 2014 18:14:03 +0100
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To: Davey Shafik <davey@php.net>
Cc: Simon J Welsh <simon@simon.geek.nz>, Christian Stoller <stoller@leonex.de>, internals@lists.php.net
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Subject: Re: [PHP-DEV] [RFC] Combined Comparison Operator
From: pierre.php@gmail.com (Pierre Joye)

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Hi David,

Thanks for this proposal.

On Feb 13, 2014 10:30 PM, "Davey Shafik" <davey@php.net> wrote:
>
> On 2/13/14, 2:19 AM, Christian Stoller wrote:
>>
>> Davey Shafik <davey@php.net> wrote:
>>>
>>> This adds a new operator "(expr) <=3D> (expr)" that returns 0 if both
>>> operands are equal, 1 if the left is greater, and -1 if the right is
>>> greater.
>>>
>>> It works with all types (just as well as <, <=3D, >=3D, > work) and is =
great
>>> for usort() callbacks for example.
>>>
>>
>> Why not using `$a - $b` instead of `$a <=3D> $b`?
>>
>>
>> Simon J Welsh <simon@simon.geek.nz> wrote:
>>>
>>> The only real case I see for this is to save some boilerplate when
>>> dealing with arrays. Strings have strcmp(), numbers have subtraction
>>> And when you=E2=80=99re sorting objects, you probably want to be doing
>>> the comparison on some string/numeric property.
>>>
>>
>> Agreed! It would make more sense to write a comparison function for
arrays/objects.
>>
>>
>> Best regards
>> Christian
>>
>
> This operator DOES work on arrays/objects. The fact it also works on
scalar values is a bonus if that's how you want to look at it :P

This new operator doea not look too useful to me but here is one comment
about objects handling:

It compares only values, seems to be the only solution but the actual usage
for that is rather inexistent as it compares apples and pears, or am I
missing something?

Cheers,
Pierre

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