Good morning, people! I would like to share a post about *variadic function*, *argument unpacking* &

Chemaclass

Good morning, people!
I would like to share a post about variadic function, argument unpacking & function variable argument list.

Typed arrays in PHP 🐘 (reading time: 3 min)

Medium: https://chemaclass.medium.com/typed-arrays-in-php-11ce6d674d9f
DevTo: https://dev.to/chemaclass/typed-arrays-in-php-hoo

UKHD8KTMF

You can achieve type safety with collections like:

interface CustomerCollectionInterface extends ArrayAccess, IteratorAggregate
{
    public function addCustomer(Customer $customer);

    public function offsetGet($offset): Customer;
}

UKHD8KTMF

I find this approach much cleaner.

Chemaclass

Well, yeah, it depends if the collection itself has some special logic on its own (then it makes sense to create a class for it), otherwise, maybe it would be a bit overkill to create a new collection class for each collection type, don't you think?

UKHD8KTMF

I strongly disagree, but that is a matter of opinion. I prefer that things fail immediately, when I want to add wrong item somewhere and not when I want to consume the value.

UKHD8KTMF

I miss typed lists (collections) as a language feature though. So both approaches are a workaround.