@JvmStatic

val foo = gitlabEvent.webhookEvent.objectAttributes != null && gitlabEvent.webhookEvent.objectAttributes.action == Action.OPEN

gitlabEvent

webhookEvent

objectAttributes

Smart cast to 'ObjectAttributes' is impossible, because 'gitlabEvent.webhookEvent.objectAttributes' is a complex expression

bar

Fred

object

inner

private

inner class TheLock internal constructor()
    private val theLockInstance = TheLock()

    inline fun <T> synced(block: (TheLock) -> T) =
            synchronized(this) {
                block(theLockInstance)
            }

compile-testing

val customersSet = customers.collectToSet { it.phoneNumber }

doSomething{
  "a"
  "b"
  "c"
}

//wins - horizontal

fun horizontalWin(letter: String, listIn: listOf<String>() ): boolean {

var counter = 0

for (element in listIn ) {

if (element == letter) {

counter++

}

}

if (counter == 3) return true

}

fun main(args: Array<String>) {

var row1 = listOf("X","O","_")

var checkForWin = horizontalWin("X", row1)

}

readLine()

./gradlew run

readLine()

null

fun isObjectOfSameType(first: Comparable?, second: Comparable?) : Boolean {
            return first::class.java.isAssignableFrom(second)
        }

javaClass

::class.java

Nullable

values

enum class Kind { Single, Double } 
class A(val a: Kind)

A().a /// from here get the type of a and get its enum class, then get enum.values?

private inline fun <reified T> parseFile(files: Map<String, Path>,
                                         fileName: String,
                                         mapper: ObjectMapper): Array<T> =
    files[fileName]
        ?.toFile()
        ?.readText()
        ?.let {
            mapper.readValue<Array<T>>(it)
        }
        ?: emptyArray()

inline private fun <reified T> persistData(data: Iterable<T>) { for (elem in data) }

suspend

common

runBlocking