Checks semantic equality of functions. The usual equality for functions is hash based. It cannot check the equality of, say, #(+ % %) and #(* 2 %). The general problem is of course undecidable so we only test for given sample values. Meant to be used in tests.

In normal equality you basically check ‘content’ equality. So for instance [1 2 3] is equal to '(1 2 3). Typed eqaulity checks content and type, so it is stricter. This is meant to be used in tests.