`b?.let` still won't compile since in theory you c...

# getting-started

[janvladimirmostert]

b?.let still won't compile since in theory you can do:

var b: Int? = null
	listOf("a", "b", "c").forEach {
		b?.let {
			println(b + 1) <--- compiler error here unless you use `!!` or `b as Int`
		}
		thread { 
			b = null
		}
	}

Even when you don't have a thread modifying the value of b, the compiler will still complain Smart cast to Int is impossible, ...