`Error:(29, 21) Kotlin: Only safe (?.) or non-null...
# getting-startede
enleur
12/28/2016, 6:42 PMError:(29, 21) Kotlin: Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type Int?enleur
12/28/2016, 6:42 PMError:(29, 21) Kotlin: Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type Int?