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Date: Sat, 13 Sep 2025 13:55:43 +0300
Message-ID: <CAAwdEzCGH2DMJiwWEWijcam5Zudj7CavX4Su1+jEHnSoxKe39g@mail.gmail.com>
Subject: Re: [PHP-DEV] [RFC proposal] Syntactic sugar for array push()
To: "Rowan Tommins [IMSoP]" <imsop.php@rwec.co.uk>
Cc: internals@lists.php.net, Ken Guest <kguest@php.net>
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From: drealecs@gmail.com (=?UTF-8?Q?Alexandru_P=C4=83tr=C4=83nescu?=)

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On Sat, Sep 13, 2025 at 1:24=E2=80=AFPM Rowan Tommins [IMSoP] <imsop.php@rw=
ec.co.uk>
wrote:

> On 12 September 2025 20:02:04 BST, "Du=C5=A1an Krehe=C4=BE" <dusankrehel@=
gmail.com>
> wrote:
> >[+] array_push
> >[-] array_pop
> >[-<] array_shift
> >
> >array_unshift() is a special case of array_merge(), so it would then nee=
d
> >syntactic sugar for merging arrays, or rather a reserved merge.
>
> array_unshift is no more a special case of array_merge than array_push,
> particularly in the single-element case we're talking about here - it's
> really just the same operation at the other end of the array.
>
> Since we have an extremely well-established array_push shorthand, so don'=
t
> need a new one, we could perhaps have "<" for "at start", and "-" for "po=
p":
>
> $foo[] =3D $toPush;
> $popped =3D $foo[-];
> $foo[<] =3D $toUnshift;
> $shifted =3D $foo[-<];
>
> I'm not totally convinced it's necessary, but I don't completely hate it.
>


 I think `$item =3D $list[-]` makes sense instead of writing `$item
=3D array_pop($list)`.

I don't think we should add shorthand operations for `array_unshift()` and
`array_shift()`, as those are slower operations on array, O(n), compared to
`array_push()` and `array_pop()` that are O(1).
I mean, we should not make it easier to use, a function is good enough.

--=20
Alex

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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><div class=3D"gmail_quote gmail=
_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, Sep 13, 202=
5 at 1:24=E2=80=AFPM Rowan Tommins [IMSoP] &lt;<a href=3D"mailto:imsop.php@=
rwec.co.uk">imsop.php@rwec.co.uk</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">On 12 September 2025 20:02:04 BST, &quot;D=
u=C5=A1an Krehe=C4=BE&quot; &lt;<a href=3D"mailto:dusankrehel@gmail.com" ta=
rget=3D"_blank">dusankrehel@gmail.com</a>&gt; wrote:<br>
&gt;[+] array_push<br>
&gt;[-] array_pop<br>
&gt;[-&lt;] array_shift<br>
&gt;<br>
&gt;array_unshift() is a special case of array_merge(), so it would then ne=
ed<br>
&gt;syntactic sugar for merging arrays, or rather a reserved merge.<br>
<br>
array_unshift is no more a special case of array_merge than array_push, par=
ticularly in the single-element case we&#39;re talking about here - it&#39;=
s really just the same operation at the other end of the array. <br>
<br>
Since we have an extremely well-established array_push shorthand, so don=
9;t need a new one, we could perhaps have &quot;&lt;&quot; for &quot;at sta=
rt&quot;, and &quot;-&quot; for &quot;pop&quot;:<br>
<br>
$foo[] =3D $toPush;<br>
$popped =3D $foo[-];<br>
$foo[&lt;] =3D $toUnshift;<br>
$shifted =3D $foo[-&lt;];<br>
<br>
I&#39;m not totally convinced it&#39;s necessary, but I don&#39;t completel=
y hate it.<br>=C2=A0</blockquote><div><br></div><div>=C2=A0I think `$item =
=3D $list[-]` makes sense instead=C2=A0of writing `$item =3D=C2=A0array_pop=
($list)`.</div><div><br></div><div>I don&#39;t think we should add shorthan=
d operations for `array_unshift()` and `array_shift()`, as those are slower=
 operations on array, O(n), compared to `array_push()` and `array_pop()` th=
at are O(1).</div><div>I mean, we should not make it easier to use, a funct=
ion is good enough.</div><div><br></div><div>--=C2=A0</div><div>Alex</div><=
div><br></div></div></div>

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