Hands-On Design Patterns with Kotlin

Constants

We define all parameters as constants:

const val GRENADE_DAMAGE : PointsOfDamage = 5Lconst val RIFLE_DAMAGE = 3Lconst val REGULAR_SPEED : Meters = 1

Those values are very effective, since they are known during compilation.

Unlike static final variables in Java, they cannot be placed inside a class. You should place them either at the top level of your package or nest them inside object.

Note that although Kotlin has type inference, we can specify the types of our constants explicitly, and even use type aliases. How about having DEFAULT_TIMEOUT : Seconds = 60 instead of DEFAULT_TIMEOUT_SECONDS = 60 in your code?