isEmpty

Common

JVM

Native

1.0

fun CharSequence.isEmpty(): Boolean

Returns true if this char sequence is empty (contains no characters).

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
fun markdownLink(title: String, url: String) =
    if (title.isEmpty()) url else "[$title]($url)"

// plain link
println(markdownLink(title = "", url = "https://kotlinlang.org")) // https://kotlinlang.org

// link with custom title
println(markdownLink(title = "Kotlin Language", url = "https://kotlinlang.org")) // [Kotlin Language](https://kotlinlang.org)
//sampleEnd
}