kotlin-stdlib/kotlin.text/isLowerCase

isLowerCase

expect inline fun Char.isLowerCase(): Boolean(source)

Returns true if this character is lower case.

A character is considered to be a lower case character if its category is CharCategory.LOWERCASE_LETTER, or it has contributory property Other_Lowercase as defined by the Unicode Standard.

Since Kotlin

1.0

Samples

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

fun main() { 
   //sampleStart 
   val chars = listOf('a', 'λ', 'A', '1', '+')
val (lowerCases, notLowerCases) = chars.partition { it.isLowerCase() }
println(lowerCases) // [a, λ]
println(notLowerCases) // [A, 1, +] 
   //sampleEnd
}