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Date: Thu, 13 Apr 2023 07:51:21 +0100
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Subject: Re: [PHP-DEV] First class callable syntax for instance methods
From: rowan.collins@gmail.com (Rowan Tommins)

On 13 April 2023 04:59:56 BST, Eugene Sidelnyk <zsidelnik@gmail=2Ecom> wrot=
e:

>It would be a great pleasure to have the ability to wrap the instance
>method the same way=2E=20


The first-class callable syntax works just fine with instance methods, but=
 you need to use it on a particular instance: $someInstance->someMethod(=2E=
=2E=2E)

Unfortunately, this is no use for your example, essentially because PHP (u=
nlike, say, Python) doesn't consider $this to be part of the parameters to =
a method: Verification::getId(=2E=2E=2E) would mean fn($item) =3D> Verifica=
tion::getId($item) but you can't call an instance method that way=2E

What you want is fn($item) =3D> $item->getId()=2E A syntax like =2E=2E=2E-=
>getId() wouldn't be much use - it wouldn't be able to check for the method=
's existence in advance (the "call to non-static" error in your example hap=
pens as soon as you try to create the closure https://3v4l=2Eorg/G8va8), or=
 copy over any type information, because there's no way to deduce what clas=
s will be used later=2E

So maybe it would need some other indicator, like Verification::getId(inst=
ance =2E=2E=2E) to indicate that you want a closure with an extra parameter=
 to be used as the instance=2E Maybe someone has a less ugly suggestion?

Regards,

--=20
Rowan Tommins
[IMSoP]