Have one more question, everytime a create and use...

# announcements

[SrSouza]

Have one more question, everytime a create and use a function with contract I need to add the annotation @ExperimentalContracts ?

[ilya.gorbunov]

You can opt-in for an experimental feature either in propagating or in non-propagating way. You can find more about it here https://github.com/Kotlin/KEEP/blob/master/proposals/experimental.md

[Egor Trutenko]

To summarize, put this in your build.gradle:

kotlin {
  sourceSets.all {
    languageSettings {       useExperimentalAnnotation('kotlin.contracts.ExperimentalContracts')
    }
  }
}

[ilya.gorbunov]

@Egor Trutenko That's one possible solution, but I recommend to understand the design of these annotations first, before deciding to use this way to opt-in.