Is there a technical reason to now allow closures as the integrand?

Mayve because they aren't guaranteed to be actual functions (in the mathematical sense) and could return random values

	▲	legobmw99 7 months ago \| parent [-]
		The Fn trait could be used, which prevents mutation, but allows a lot of useful closures. I should note, a motivated user could provide a junk function no matter what the type accepted is