GitHub - Khan/kotlin-for-python-developers: A thorough introduction to Kotlin, aimed at developers with a background in Python or other dynamic languages.
Getting Started With Kotlin - DZone Refcardz
Kotlin Twitterissä: "New experimental feature in Kotlin 1.3: Unsigned integers. Use the “u” or “uL” suffix to declare an unsigned literal, or convert from a signed number using toUByte, toUShort, toUInit and