Dan LeechBlog post about #php collections and cats in pipes: https://www.dantleech.com/blog/2026/03/15/php-collections-and-you/
(ok, they're in cans, and I didn't write about them)
Sebastian Bergmann 
@dantleech I wrote a similar article recently: https://phpunit.expert/articles/type-safe-collections.html?ref=mastodon
@sebastian nice article - I forgot to mention variadic static constructors in my blog post ... also haven't considered a varadic on the private constructor until now, but that makes sense :)