Re: Countable Type Hint
| From: | Levi Morrison | Date: | Thu, 17 Nov 2016 12:59:42 +0000 |
| Subject: | Re: Countable Type Hint | ||
| References: | 1 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-96949@lists.php.net to get a copy of this message | ||
On Thu, Nov 17, 2016 at 5:52 AM, Craig Duncan <php@duncanc.co.uk> 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?
>
> Thanks,
> Craig
It's definitely not doable with the name countable.
Class/Trait/Interface names are case insensitive. This means
countable already has meaning and it is unambiguously the interface.