Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:118757
MIME-Version: 1.0
References: <CAM0CcxgCT=M++9fTosG8FzuCKn=v8VQykRQY1E8_BzT=k_rk4w@mail.gmail.com>
 <A08311CF-26BD-4470-95CB-1D6D188CE304@gmail.com> <CANMwmbM7Z2t69CbA6syRS3yJo3z7VtAp11ydaM-MuHfAGAwQhw@mail.gmail.com>
In-Reply-To: <CANMwmbM7Z2t69CbA6syRS3yJo3z7VtAp11ydaM-MuHfAGAwQhw@mail.gmail.com>
Date: Wed, 5 Oct 2022 20:53:11 +0300
Message-ID: <CAM0Ccxj=pSe90XtNeokGgkp=PMc+TPSBkkDB1waxNnwQypr2CA@mail.gmail.com>
To: juan carlos morales <dev.juan.morales@gmail.com>
Cc: Claude Pache <claude.pache@gmail.com>, PHP Internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="000000000000af45f905ea4d4074"
Subject: Re: [PHP-DEV] Union type casts
From: zsidelnik@gmail.com (Eugene Sidelnyk)

--000000000000af45f905ea4d4074
Content-Type: text/plain; charset="UTF-8"

I used to have an awkward feeling when it was necessary to convert the
nullable integer into a nullable string. It would be kind of ternary
operator anyway. Either `$b = (null !== $a) ? (string)$a : null;` or `$b =
(string)$a ?: null;`.

A lot easier to read would it be if written this way: `$b = (?string)$a;`.
The intentions are clear when doing explicit type-cast.

Currently, I don't see any other situations when this feature may be useful


Thank you

On Wed, Oct 5, 2022, 4:43 PM juan carlos morales <dev.juan.morales@gmail.com>
wrote:

> There is a difference is declaring a function parameter of different
> types ... because before hand, when the code calls the function, we
> might not be sure about what kind if data the function will receive,
> so the function could expect different types, and work the parameter
> correctly internally..... nice
>
>
> but ... when casting, on purpose, what use case can apply to it?
>
> Are you facing a situation where manual union type cast is needed? can
> you share it with us?
>
> thanks
>

--000000000000af45f905ea4d4074--