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fun main() {


    inline fun File.forEachFileInline(each: (File)->Unit) = listFiles().forEach(each)
    fun File.forEachFile(each: (File)->Unit) = listFiles().forEach(each)

    //inline

    run{
        File("XXX").forEachFileInline {
            return@run
        }
    }


    run{
        File("XXX").forEachFile {
            return@run
        }
    }

    run{
        File("XXX").listFiles().forEach {
            return@run
        }
    }



    //refied
    ## An inlined function with reified type is not callable from Java code.


    https://stackoverflow.com/questions/45949584/how-does-the-reified-keyword-in-kotlin-work

    inline fun <reified T> Int.findParentOfType(): T? {
        var p = parent
        while (p != null && p !is T) {
            p = p.parent
        }
        return p as T?
    }



    fun <T> Int.findParentOfType(clazz: Class<T>): T? {
        var p = parent
        while (p != null && !clazz.isInstance(p)) {
            p = p.parent
        }
        @Suppress("UNCHECKED_CAST")
        return p as T?
    }
}