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To: Levi Morrison <levi.morrison@datadoghq.com>
CC: PHP internals <internals@lists.php.net>
Thread-Topic: [PHP-DEV] Proposal: Adding functions any(iterable $input,
 ?callable $cb = null, int $use_flags=0) and all(...)
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Date: Tue, 1 Sep 2020 00:03:04 +0000
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Subject: Re: [PHP-DEV] Proposal: Adding functions any(iterable $input,
 ?callable $cb = null, int $use_flags=0) and all(...)
From: tysonandre775@hotmail.com (tyson andre)

Hi Levi Morrison,=0A=
=0A=
> I was actually working on this sort of thing recently. _Technically_,=0A=
> you can support `all`, `any`, and `first` by using a single function:=0A=
> =0A=
> =A0=A0=A0 function find_first(iterable $of, callable($value, $key): bool=
=0A=
$thatSatistifes): Iterator=0A=
> =0A=
> It converts the $iterable into an Iterator, then calls the callback=0A=
> for each key/value pair until one returns true, and then always=0A=
> returns the iterator at the current position.=0A=
>=0A=
>=A0I'm not sure that in practice it would be that friendly, but it's=0A=
> worth pointing out for discussion at least.=0A=
=0A=
I'd find the `find($iterable, $callable, $default =3D null): mixed` to be m=
ore user-friendly,=0A=
personally, and would worry about accidentally increasing memory usage if I=
 left one of those iterables around as a saved value or a long-lived local =
variable.=0A=
=0A=
There's plenty of time until the php 8.1 feature freeze, so I don't feel li=
ke increasing the scope of this RFC=0A=
(https://wiki.php.net/rfc/any_all_on_iterable)=0A=
even though I would find some version of `find()` with a callback useful.=
=0A=
=0A=
Thanks,=0A=
- Tyson=