Newsgroups: php.internals
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Xref: news.php.net php.internals:110962
Date: Sun, 12 Jul 2020 12:24:50 +0200
To: "Benjamin Eberlei" <kontakt@beberlei.de>
Cc: "Marco Pivetta" <ocramius@gmail.com>,
	"Nikita Popov" <nikita.ppv@gmail.com>,
	"PHP internals" <internals@lists.php.net>
Message-ID: <173428d5cae.fd7702bf74344.4165657030995153344@manuelcanga.dev>
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Subject: Re: [PHP-DEV] [VOTE] Named arguments
From: php@manuelcanga.dev (Manuel Canga)

Hi,


 ---- En vie, 10 jul 2020 16:18:40 +0200 Benjamin Eberlei <kontakt@beberlei=
.de> escribi=C3=B3 ----
 > On Fri, Jul 10, 2020 at 11:21 AM Marco Pivetta <ocramius@gmail.com> wrot=
e:
 >=20
 > > Hi Nikita,
 > >
 > > I kept my "NO" stance here, as per discussion in
 > > https://externals.io/message/110004#110005, where I provided (in my
 > > opinion) good/safe alternatives to arrays as input parameters.
 > >
 >=20
 > > The BC implications on this RFC still largely outweigh any advantages =
that
 > > it brings, from my perspective.
 > >
 >=20
 > Are there alternatives to named parameters? Of course. Are they as simpl=
e?
 > Not really.
 >=20
 > 1. You can use an array, but array values cannot be typed, so you comple=
tly
 > loose typing of the language.
 > 2. You can use an object with builder pattern, but that requires a lot o=
f
 > code to write, and increases the mental capacity of understanding someth=
ing
 > for developers.
 > 3. your example of an api to convert named params to a sequence is not
 > discoverable, you don't know looking or using method A() that it comes w=
ith
 > an additional NamedParamsA() helper.
 >=20


4. Other option is creating a  new function( not yet available in PHP ) lik=
e:

```
 array_check_scheme( array $array, array $scheme,  bool $forced =3D false  =
): bool
```

( name of function can be better )

in order to check types in arrays. Then you could:

/**
  * @param array $args{name: string, surname: string, ?age: int}
 */
function my_function(  array $args ) {
   $scheme =3D ['name' =3D> 'string', 'surname' =3D> 'string', '?age' =3D> =
'int');
   $is_valid =3D  array_check_scheme( $args, $scheme );
}


my_function( ['name' =3D 'Nikita', 'surname' =3D> 'Popov' ] );  //is_vaild =
=3D true
my_function( ['name' =3D 'Nikita'] );  //is_vaild =3D false
my_function( ['name' =3D 'Nikita'],  'age' =3D> 10 );  //is_vaild =3D false

A function like this could be useful in other contexts as well.

Regards
--
Manuel Canga