```fun main() { println("%s %s".format("hi", "...

# getting-started

[Michael de Kaste]

fun main() {
    println("%s %s".format("hi", "bye"))
    println("%s %s".format(*arrayOf("hi", "bye")))
    println("%s %s".format(arrayOf("hi", "bye"))) // java.util.MissingFormatArgumentException: Format specifier '%s'
}

Anyone know why it goes wrong with a pure array declaration?

[ephemient]

unlike Java, .format(x) doesn't change behavior based on whether x is an array or not

[ephemient]

in your third case, the function is actually receiving arrayOf(arrayOf("hi", "bye")) (the outer array being generated by the compiler, same as in the first case)

[Michael de Kaste]

ah yes I see, since the argument accepts a varargs of Any? It just accepts the input itself as the Any?

[Roukanken]

Think about what would be passed if you wrote

println("%s %s".format(arrayOf("hi", "bye"), arrayOf("1", "2")))

and in what ways it is similar to your third case