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To: Dik Takken <dik.takken@gmail.com>, PHP internals <internals@lists.php.net>
Thread-Topic: [PHP-DEV] [RFC] Global functions any() and all() on iterables
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Date: Tue, 1 Sep 2020 23:35:46 +0000
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Subject: Re: [PHP-DEV] [RFC] Global functions any() and all() on iterables
From: tysonandre775@hotmail.com (tyson andre)

> Perhaps we could do the same thing by introducing an items() function=0A=
> that takes an iterable and yields one array for each item in the=0A=
> iterable. The arrays contain the key/value pairs. Quoting the example=0A=
> Tyson gave:=0A=
>=0A=
> =A0 any($itemMap, fn($enabled, $itemId) =3D> $enabled &&=0A=
> =A0 meetsAdditionalCondition($itemId), ARRAY_FILTER_USE_BOTH)=0A=
>=0A=
> Using items(), the above can also be written as:=0A=
>=0A=
> =A0 any(items($itemMap), fn($item) =3D> $item[0] &&=0A=
> =A0 meetsAdditionalCondition($item[1]))=0A=
=0A=
This could be called various things (`items()`, `entries()`, `iterable_item=
s(): Traversable`)=0A=
and there'd be the question of whether=0A=
`array_items(array $entries): array<array{0:int|string,1:mixed}>`=0A=
should also be added (return a list of key+value entries).=0A=
=0A=
I'd expect `items(): iterable` to definitely have more performance overhead=
 than `$flag=3D0`=0A=
due to the extra method calls to next() and key() on the result=0A=
but potentially be better for readability or working with generators.=0A=
=0A=
There's many proposed ways to solve that problem=0A=
(adding `int $flag=3D0`, `any_item(iterable, callable($value, $key))`, etc.=
),=0A=
so I'm leaving it out of the RFC=0A=
=0A=
Thanks,=0A=
- Tyson=