Game

PlayerList

PlayerList

List<Player>

5 + 3

game.players += myPlayer

Map<UUID, GamePlayer>

game.players += gamePlayer

val newPlayerList = game.players + gamePlayer

PlayerList

+=

fun getParameters(command: KClass<out SimpleCommand>): List<Pair<KParameter, Argument>> {
        val constructor = command.primaryConstructor ?: throw IllegalArgumentException("Command has no primary constructor")

        return constructor.parameters.map { it to (it.findAnnotation<Argument>() ?: throw MissingAnnotationException("Found parameter without Argument annotation", Argument::class.qualifiedName)) }.apply {
            // check if there are any non-string parameters
            forEach {
                if(it.second.optional && !it.first.isOptional)
                    throw IllegalArgumentException("Found parameter that is not optional, but their annotation says it is (add a default value to the parameter '${it.second.name}').")
                if(it.first.type != String::class)
                    throw IllegalArgumentException("Found parameter without String type.")
            }
        }
    }

.type

Type

.type.jvmErasure

String::class.createType()