On 17 February 2025 14:39:42 GMT, Viktor Khramov <dev.999.vic...@gmail.com>
wrote:
>Hi!
>
>The point is here:
>https://gist.github.com/vhood/665418835e65be26d5a818fded92ab75
>Static functions look awful and break the object's API.
Personally, I think quite the opposite: named constructors make a lot more
sense than type-based overloads. For instance, you might have both
createFromJson and createFromYaml; their inputs are both going to be "string"
as far as the type system is concerned, so overloading would be useless.
Swift gets around this using "argument labels" which is sort of like requiring
named arguments and despatching based on those names, but I believe is actually
derived from SmallTalk's multipart method names.
Delphi is more explicit: a constructor is any class method marked with
"constructor" in its declaration, and the name "Create" is just a convention.
It does also support overloading on types, so other names are rarely used,
which is a shame.
In your example, instead of this meaning different things based on what $a
happens to hold:
$decision = new Decision($a, $b);
You could write one of these to be clear:
$decision = Decision::createFromId($a, $b);
$decision = Decision::createFromMail($a, $b);
Even if someone were to come up with a working implementation of overloading in
PHP's type system, I would probably oppose it, because I think it makes code
harder to read and reason about.
Regards,
Rowan Tommins
[IMSoP]
