>>> import kotlin.text.Regex
>>> val pattern = Regex("^\\d+.*$")
>>> pattern.find("Hello World")
ERROR: /line3.kts: (1, 9) Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: 
kotlin.deprecated kotlin.inline public fun <T> kotlin.Array<out ???>.find(predicate: (???) -> kotlin.Boolean): ??? defined in kotlin
kotlin.deprecated kotlin.inline public fun <T> kotlin.Iterable<???>.find(predicate: (???) -> kotlin.Boolean): ??? defined in kotlin
kotlin.deprecated kotlin.inline public fun <T : kotlin.Any> kotlin.Iterator<???>.find(predicate: (???) -> kotlin.Boolean): ??? defined in kotlin
kotlin.deprecated kotlin.inline public fun kotlin.String.find(predicate: (kotlin.Char) -> kotlin.Boolean): kotlin.Char? defined in kotlin