compareTo

Platform and version requirements: JVM (1.0), JS (1.2), Native (1.3)

fun String.compareTo(
    other: String, 
    ignoreCase: Boolean = false
): Int

Compares two strings lexicographically, optionally ignoring case differences.

If ignoreCase is true, the result of Char.uppercaseChar().lowercaseChar() on each character is compared.