kotlin-stdlib / kotlin.text / uppercaseChar

uppercaseChar

Common

JVM

Native

1.5

fun Char.uppercaseChar(): Char
(Common source) (JVM source) (JS source) (Native source)

Converts this character to upper case using Unicode mapping rules of the invariant locale.

This function performs one-to-one character mapping. To support one-to-many character mapping use the uppercase function. If this character has no mapping equivalent, the character itself is returned.

import java.util.*
import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val chars = listOf('a', 'ω', '1', 'ŉ', 'A', '+', 'ß')
val uppercaseChar = chars.map { it.uppercaseChar() }
val uppercase = chars.map { it.uppercase() }
println(uppercaseChar) // [A, Ω, 1, ŉ, A, +, ß]
println(uppercase) // [A, Ω, 1, ʼN, A, +, SS]
//sampleEnd
}