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Date: Thu, 17 Nov 2016 15:14:50 +0100
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Subject: Re: [PHP-DEV] Countable Type Hint
From: j.boggiano@seld.be (Jordi Boggiano)

On 17/11/2016 13:52, Craig Duncan wrote:
> Hi everybody
>
> Following on from the recent rfc for *count()* (
> https://wiki.php.net/rfc/counting_non_countables) and the one for *iterable*
> (https://wiki.php.net/rfc/iterable) it would be useful if there was a
> `countable` type hint:
>
> function foo(countable $thing)
> {
>     if (count($thing) > 0) {
>         # ...
>     }
> }
>
> However I think this it is much more useful when combined with *iterable*,
> maybe something like (arraylike = iterable && countable)
>
> function handle_records(arraylike $result)
> {
>     if (count($result) === 0) {
>         handle_empty();
>         return;
>     }
>
>     foreach ($result as $value) {
>         handle_value($value);
>     }
> }
>
> Does anybody have any thoughts on this?
> Should I bring *countable* to RFC?
> Should I bring *arraylike* to RFC?

IMO if we add an arraylike-style hint it should include ArrayAccess as 
well, and array_* functions should probably be fixed to work with 
arraylike objects too, then it'd bring actual value.

Cheers

-- 
Jordi Boggiano
@seldaek - http://seld.be