kotlin-coroutines

Extend existing collection extension methods like isEmpty and isNotEmpty to include contracts that imply whenever the verified collections are not null.

For example:

/**
 * @return true if the array is null or has no elements.
 */
@OptIn(ExperimentalContracts::class)
fun <Type> GdxArray<Type>?.isEmpty(): Boolean {
  contract {
    returns(false) implies (this@isEmpty != nu

Create an example that debounces events fired:
Use a range input to define the debouncing-interval and offer a button that uses this interval debouncing it's clicks.