any

import kotlin.test.*

fun main() { 
   //sampleStart 
   // any is synonymous to !isEmpty()
println("\"str\".any() is ${"str".any()}") // true
println("\"\".any() is ${"".any()}") // false 
   //sampleEnd
}

import kotlin.test.*

fun main() { 
   //sampleStart 
   val string = "Kotlin"
// All characters are letters
println("string.any { it.isLetter() } is ${string.any { it.isLetter() }}") // true
// Some of them are lowercase letters
println("string.any { it.isLowerCase() } is ${string.any { it.isLowerCase() }}") // true
// But there are no digits among them
println("string.any { it.isDigit() } is ${string.any { it.isDigit() }}") // false

// For an empty string `any` always return `false`
println("\"\".any { true } is ${"".any { true }}") // false
println("\"\".any { false } is ${"".any { false }}") // false 
   //sampleEnd
}