fun getStringLength(obj: Any): Int? { // `obj` is automatically cast to `String` on the right-ha...

# getting-started

[crazdrms]

fun getStringLength(obj: Any): Int? {
// obj is automatically cast to String on the right-hand side of &&
if (obj is String && obj.length > 0) {
return obj.length
}

return null
}
Why is it Int here?

[shady-dom]

Int being the return type, the ? basically says “forget the type, I can be null too”

[shady-dom]

So, fun getStringLength(obj: Any): <Int or null> {

[crazdrms]

got it , it just made sense, I was reading it as returning String or null. Got my self confused. I just saw it was returning length of String which is Int 🤦‍♂️ . Thanks.

[shady-dom]

You’re welcome!

[Andreas Sinz]

@crazdrms for future occasions, please surround multi-line code with 3 backticks

[crazdrms]

Will do.Thanks.