Android Development with Kotlin

Numbers

Basic Kotlin data types used for numbers are equivalents of Java numeric primitives:

Kotlin, however, handles numbers a little bit differently than Java. The first difference is that there are no implicit conversions for numbers--smaller types are not implicitly converted to bigger types:

    var weight : Int = 12 
    var truckWeight: Long = weight // Error1 

This means that we cannot assign a value of type Int to the Long variable without an explicit conversion. As we said, in Kotlin everything is an object, so we can call the method and explicitly convert the Int type to Long to fix the problem:

 var weight:I nt = 12 var truckWeight: Long ...