kotlin-stdlib/kotlin.sequences/takeWhile

takeWhile

fun <T> Sequence<T>.takeWhile(predicate: (T) -> Boolean): Sequence<T>(source)

Returns a sequence containing first elements satisfying the given predicate.

The operation is intermediate and stateless.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val chars = ('a'..'z').toList()
println(chars.take(3)) // [a, b, c]
println(chars.takeWhile { it < 'f' }) // [a, b, c, d, e]
println(chars.takeLast(2)) // [y, z]
println(chars.takeLastWhile { it > 'w' }) // [x, y, z] 
   //sampleEnd
}
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val chars = ('a'..'z').toList()
println(chars.take(3)) // [a, b, c]
println(chars.takeWhile { it < 'f' }) // [a, b, c, d, e]
println(chars.takeLast(2)) // [y, z]
println(chars.takeLastWhile { it > 'w' }) // [x, y, z] 
Open in Playground →
Target: JVMRunning on v.2.1.20

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