``` data class CarMake(val name: String) fun main...

# getting-started

[marstran]

data class CarMake(val name: String)

fun main(args: Array<String>) {
    val carMakes = listOf(CarMake("Audi"), CarMake("Toyota"))
    val map = carMakes.groupBy { it.name.first() }

    // Prints {A=[CarMake(name=Audi)], T=[CarMake(name=Toyota)]}
    println(map)
}