Bob Glamm
03/21/2023, 2:54 PMdata class Foo(x: Int)
data class Bar(y: String, foo: Foo)
data class AllTheBars(bars: List<Bar>)
is it possible get a focus (Lens or Optional) that is List<Bar> -> List<Foo>?
What I'm really trying to do is come up with an Optional<AllTheBars, Foo> that focuses on a Foo that satisfies a particular predicate.val focus = AllTheBars.bars compose Fold.list() compose Bar.foo
// then
maybeFoo: Foo? = focus.findOrNull(allTheBars) { it.x == 3 }