Nested lambda calls in Kotlin

Question

When nesting lambda calls in Kotlin, how can I unambiguously refer to child\'s and parent\'s it element? For instance:

data class Course(var wee         


        

Answer 1

it always refers to the innermost lambda's parameter, to access outer ones, you have to name them. For example:

list1.filter { a -> list2.none { b -> a.weekday == b.weekday && a.time == b.time} }

(You could leave the inner one as it, but it's a bit nicer if you name that too, in my opinion.)

Edit: @mfulton26 linked the relevant documentation below, see that for more details.