While I appreciate the effort and like the approach in general, in this use case I really would prefer extensions / extension functions (like in Kotlin[1]) or an IEnumerable / iterator approach (like in C#). $arr = [ new Widget(tags: ['a', 'b', 'c']), new Widget(tags: ['c', 'd', 'e']), new Widget(tags: ['x', 'y', 'a']), ]; $result = $arr |> fn($x) => array_column($x, 'tags') // Gets an array of arrays |> fn($x) => ar…
The advantage is that pipes don't care about the type of the return value.
Let's say you add a reduce in the middle of that chain. With extension methods that would be the last one you call in the chain. With pipes you'd just pipe the result into the next function