Aro questions

Aro answers

• Null property when accessing lazy non-nullable property of Android Sensor
• Initializing non-null type variable before try/catch
• How to catch many exceptions at the same time in Kotlin?
• What does header/impl keyword mean in kotlin?
• How can I tell kotlin that a function doesn't return null if the parameter is not null?
• Editing/Modifying a .java file programmatically? (not the .class file)