fun <T> Array<out T>.contentDeepToString(): String

@JvmName("contentDeepToStringInline") fun <T> Array<out T>.contentDeepToString(): String

fun <T> Array<out T>?.contentDeepToString(): String

@JvmName("contentDeepToStringNullable") fun <T> Array<out T>?.contentDeepToString(): String

Returns a string representation of the contents of this array as if it is a List. Nested arrays are treated as lists too.

If any of arrays contains itself on any nesting level that reference is rendered as "[...]" to prevent recursion.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val matrix = arrayOf(
    intArrayOf(3, 7, 9),
    intArrayOf(0, 1, 0),
    intArrayOf(2, 4, 8)
)

println(matrix.contentDeepToString()) // [[3, 7, 9], [0, 1, 0], [2, 4, 8]]
//sampleEnd
}