foreach in kotlin

Question

I see an example in the official site:

fun main(args : Array<String>) {
  args filter {it.length() > 0} foreach {print("Hello, $it!")}
}

But when I copied it to idea, it reports that foreach is a unresolved reference.

What's the right code?

Answer 1

For other Kotlin newbees like me who are coming here just wanting to know how to loop through a collection, I found this in the documentation:

val names = listOf("Anne", "Peter", "Jeff")
for (name in names) {
    println(name)
}

Answer 2

It needs a capital E in forEach ie:

fun main(args : Array<String>) {
    args.asList().filter { it -> it.length > 0 }.forEach { println("Hello, $it!") }
}