uppercaseChar

expect fun Char.uppercaseChar(): Char(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.

Since Kotlin

1.5

Samples

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

fun main() { 
   //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
}
xxxxxxxxxx
 
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] 
Open in Playground →
Target: JVMRunning on v.2.1.20

actual fun Char.uppercaseChar(): Char(source)

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

Since Kotlin

1.5

Samples

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

fun main() { 
   //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
}
xxxxxxxxxx
 
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] 
Open in Playground →
Target: JVMRunning on v.2.1.20

actual inline fun Char.uppercaseChar(): Char(source)

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

Since Kotlin

1.5

Samples

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

fun main() { 
   //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
}
xxxxxxxxxx
 
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] 
Open in Playground →
Target: JVMRunning on v.2.1.20

actual fun Char.uppercaseChar(): Char(source)

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

Since Kotlin

1.5

Samples

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

fun main() { 
   //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
}
xxxxxxxxxx
 
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] 
Open in Playground →
Target: JVMRunning on v.2.1.20

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