Accept Suspend and Non-Suspend as Parameter in Kotlin

Kotlin as always comes with a smart and simple solution. 😀 Check out this tip!

Instead of creating two analogous functions just to be able to provide both suspend and regular functions as parameters, like so:

fun doSomethingBeforeAndAfter( nonSuspendAction: () -> Unit ) { somethingBeforeAction() nonSuspendAction() somethingAfterAction() }  suspend fun doSomethingBeforeAndAfterForSuspendableActions( suspendAction: suspend () -> Unit ) { somethingBeforeAction() suspendAction() somethingAfterAction() } 

If you can define your function as ‘inline’, it will also make it accept both suspend and non-suspend functions as parameters:

inline fun doSomethingBeforeAndAfter( action: () -> Unit ) { somethingBeforeAction() action() somethingAfterAction() } 

Check out our repo! Hope you enjoyed this Kotlin tip. 🙂

By Łukasz Reszetow, Android Developer @ Bright Inventions