Hi folks. I am having a behavior in Kotlin that do...

# announcements

[eenriquelopez]

Hi folks. I am having a behavior in Kotlin that does not look right for me.

So I have declared the following:

val title: (locale: Locale) -> String? = {
    getPrompt(it.language)
}

fun getPrompt(string: String) : String? {
    return if (string == "A") null
    else "A"
}

getPrompt can return null, hence the String?

However, the following check returns a warning from the compiler ("the comparation can be simplified since title is never null")

if (title == null) {

}

But title can effectively be null.

Is this a bug on AS/JetBrains?

[spand]

title is a function

[eenriquelopez]

Ah, yeah. Thanks, Johannes. Not enough coffee.

[spand]

Maybe you mean

if (title() == null){
}

[Andrea Giuliano]

what are you setting title to? that is a function so never null, you can try to invoke it with ()

[eenriquelopez]

You are absolutely right, title(parameter) triggers the right behavior.

[eenriquelopez]

Thank you so much.

[kqr]

title is really confusing name for a function, no?