ollieread, 15 days ago

In fact, this is my first draft of the article on covariance and contravariance as concepts but also related to #php.

I've tried to go for simple, without too many details, but I think this contains the fewest number of details I'm capable of writing 😂

https://gist.github.com/ollieread/273cf344503533ee4c497ab4c62929bf