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Date: Thu, 19 Feb 2015 15:35:06 -0700
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To: Adam Harvey <aharvey@php.net>
Cc: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Comparable: the revenge
From: levim@php.net (Levi Morrison)

>> But even here I would rather just take a function instead of requiring
>> it to be the instance of some interface:
>>
>> function sort($input, callable $comparator($a, $b): int) {
>>     /* =E2=80=A6 */
>> }
>
> Fair, but the sorting case isn't the only one that matters,
> particularly with <=3D> now as part of the language.

For completeness: I advocate accepting a comparator in every case
where custom comparison logic is needed, not just for sorting.