indexOfOrThrow |
fun <T> List<T>.indexOfOrThrow(item: T): Int
Returns the index of the given item or throws IllegalArgumentException if not found. |
randomOrNull |
fun <T> List<T>.randomOrNull(): T?
Returns a random element in the list, or null if empty fun <T> List<T>.randomOrNull(predicate: (T) -> Boolean): T?
Returns a random element in the list matching the given predicate, or null if none found |