>Kotlin protects you from mistakenly operating ...

# announcements

[karelpeeters]

Kotlin protects you from mistakenly operating on nullable types

fun foo(): String {
    null?.let {
        return it
    }
}

println(foo().length) //NullPointerException

[Ruckus]

That's a pretty serious regression. Make sure you report it.

[karelpeeters]

Yup doing that right now.

[karelpeeters]

https://youtrack.jetbrains.net/issue/KT-28061

[karelpeeters]

That took a while, I clicked "Clear Draft" twice.

[karelpeeters]

Why does that button look so much like submit!

[Pavlo Liapota]

Nice catch @karelpeeters!
In the issue description you wrote safe index operator. Did you mean safe call operator?

[karelpeeters]

Ah then I've been using the wrong name for a while, thanks!

[karelpeeters]

Huh that's funny, I thought the .-operator was called "the index operator", but I can't find references to that anywhere.

[Ruckus]

@karelpeeters I believe it's just called the dot operator.

[karelpeeters]

Yeah I think it comes from some dynamically typed languages where the dot literally indexes.