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Date: Thu, 13 May 2021 11:44:54 +0300
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To: Larry Garfield <larry@garfieldtech.com>
Cc: php internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Partial function application
From: someniatko@gmail.com (someniatko)

> Greetings, Internalians!
>
> I would like to offer for your consideration another RFC, specifically syntax for partial function application.
>
> https://wiki.php.net/rfc/partial_function_application

Thank you again for one more wonderful language change! I am sure this
is a huge step into the correct direction for the language. One of the
nice side effects of this proposal is that it is great for reducing
visual clutter when being used in functions like `array_map()`,
`array_filter()` etc. However, I have a small nitpick, which may
probably be a bit hard to implement: what about partially applied
constructors? They are sort of functions as well. For instance:

```php
$strings = [ 'value-1', 'value-2' ];
$objects = array_map(
    fn (string $s) => new ValueObject($s),
    $strings
```

to be turned into
```php
$strings = [ 'value-1', 'value-2' ];
$objects = array_map(new ValueObject(?), $strings);
```

There is unfortunately no mention of partially applied constructors in
the RFC. If it is not implemented as above, could you please consider
adding it to the Future Scope probably?