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Date: Mon, 8 Feb 2016 12:46:53 -0500
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To: Rowan Collins <rowan.collins@gmail.com>
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Subject: Re: [PHP-DEV] Proposal for a new array function
From: kinncj@gmail.com (=?UTF-8?B?S2lubiBKdWxpw6Nv?=)

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On Mon, Feb 8, 2016 at 11:38 AM, Rowan Collins <rowan.collins@gmail.com>
wrote:

> Kinn Juli=C3=A3o wrote on 08/02/2016 16:05:
>
>> That's the nice thing about userland... you are giving them ability to
>> implement what they want!
>> `array_filter([...], 'is_int', ARRAY_FILTER_USE_KEY)` does the job as th=
e
>> others... don't think having a new function would prevent this.
>>
>
> It does the job, but it is much less efficient in some cases than the
> foreach and return false case, as it must examine every element; it also
> has unnecessary memory overhead, creating a filtered list which exists on=
ly
> to be counted and thrown away; and an internal implementation could be
> optimised even further by exploiting the way the engine stores the array
> internally.
>

How does `array_filter([...], 'is_int', ARRAY_FILTER_USE_KEY)` add that
*much* overhead?
And if that's the case, instead of introducing a 99999 array function into
the core, why not just create a new Object then?

$list =3D list('foo','bar'); // I know it's a reserved token, don't have ti=
me
to find a better synonym. it's just a sample
$list[2] =3D 'baz';

var_dump($list);

string(1) "foo"
string(1) "bar"
string(1) "baz"

$list['a'] =3D 'foobar'; // Fatal error.


>
> PHP is at this stage expressive enough that a large number of core
> functions could be rewritten in multiple ways using other core functions,
> but that doesn't automatically rule out adding more functions to core whe=
re
> it is useful to do so.


PHP is at a stage where we can add support to a better structure and
objects support... we don't need a function to check if the keys are
integer, we need an object that only supports integer as keys, or even a
generic key...

Would rather have `Map<int, mixed>` than `has_numeric_keys`


>
>
> Regards,
> --
> Rowan Collins
> [IMSoP]
>
> --
> PHP Internals - PHP Runtime Development Mailing List
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>


--=20
*--*
*Kinn Coelho Juli=C3=A3o*
*Toronto - ON/Canada*

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