kotlin-stdlib / kotlin.text / takeWhile

takeWhile

Common
JVM
JS
Native
1.0
inline fun CharSequence.takeWhile(
    predicate: (Char) -> Boolean
): CharSequence

Returns a subsequence of this char sequence containing the first characters that satisfy the given predicate.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val string = "<<<First Grade>>>"
println(string.take(8)) // <<<First
println(string.takeLast(8)) // Grade>>>
println(string.takeWhile { !it.isLetter() }) // <<<
println(string.takeLastWhile { !it.isLetter() }) // >>>
//sampleEnd
}
Common
JVM
JS
Native
1.0
inline fun String.takeWhile(
    predicate: (Char) -> Boolean
): String

Returns a string containing the first characters that satisfy the given predicate.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val string = "<<<First Grade>>>"
println(string.take(8)) // <<<First
println(string.takeLast(8)) // Grade>>>
println(string.takeWhile { !it.isLetter() }) // <<<
println(string.takeLastWhile { !it.isLetter() }) // >>>
//sampleEnd
}