Get Children in File System with Kotlin

FileSystem.kt

/**
 * Sample code to handle file system
 */

import java.io.File

/**
 * Get all sub file objects in the directory.
 */
fun sample1(path: String): Array<File> {
    val f = File(String)
    return f.listFiles()
}

/**
 * Iterate files in the directory.
 */
fun sample2(path: String, block: File.() -> Unit) {
    val d = File(path)
    for (file in d.listFiles()) {
        block()
    }
}