What's the meaning of plus sign before a Kotlin method?

Question

I\'m studiyng Kotlin and was watching the AndroidDevSummit, more specifically the presentation \"Undestanding Compose\" from Leland Richardson.

While the presentatio

Answer 1

+ is kind of like an operator invoke for effects. The functions that return effects just return an object for the effect and the + says, "add it into the composition here"

by Adam Powell on Kotlin Slack

The full thread on kotlin slack

The + operator will be removed in the future, for states, probably will use Property Delegates, something like this: var myState by state { "value" }