<properties><java.version>1.8</java.version></properties

kotlin-maven-plugin

<jvmTarget>1.8</jvmTarget>

enum class Direction {
    NONE,
    NORTH, 
    SOUTH, 
    EAST, 
    WEST, 
    START, 
    END;
    
    companion object {
        private val oppositMap = mapOf(
            SOUTH to NORTH,
            NORTH to SOUTH
            // ...
        )
    }

    val opposit get() = oppositMap.getValue(this)
}

user?.let { ... }

Date

fun <T> example(type: T)...

justFunction

val singleParamFun

fun getPartRanges(partSize: Long, totalSize: Long): List<LongRange>

partSize = 20

totalSize = 74

val whatisthis = customers.flatMap { it.orders }.flatMap { it.products }
    val allProducts = customers.flatMap { it.orders.flatMap { it.products } }

println(whatisthis == allProducts)

init