and that

in

keyword can be used in a

when

for any

operator fun contains

, whether it's defined as

String.contains

,

List.contains

, your own custom type's

contains

function, etc

Would an example be:

when (charInput) {
  in "Adam" -> println("Yay")
  else -> println("Nope")
}

well

charInput in "Adam"

is equivalent to saying

"Adam".contains(charInput)

(in all instances, not just in a

when

, this is a standard Kotlin operator), so for example, "A" would hit your "Yay" block in this case, but "Adam McNeilly" would hit your "Nope" block

Right, I was just tyring to equate `charInput in "MyString" with

contains

which I didn't know was true. This is neat.