`.ifNull { … }` would be awesome indeed :) <https:...

# stdlib

[Marc Knaup]

.ifNull { … } would be awesome indeed :)
https://kotlinlang.slack.com/archives/C0B8Q383C/p1481236430000013

?: requires weird brace positioning and makes functional code less readable.

inline fun <T : Any> T?.ifNull(onNull: () -> T): T {
	contract {
		callsInPlace(onNull, InvocationKind.AT_MOST_ONCE)
	}

	return if (this !== null) this else onNull()
}

[Mike]

I like the clarity/readability of that.

Although I don't think your example will work correctly, will it?

The ifNull/?: will return an error, and that gets passed to the also?

[Marc Knaup]

It returns Nothing because error() always throws. So it will work just fine here 🙂