fun <T> Sequence<T>.takeWhile( predicate: (T) -> Boolean ): Sequence<T>
Returns a sequence containing first elements satisfying the given predicate.
The operation is intermediate and stateless.
import kotlin.test.*
fun main(args: Array<String>) {
//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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https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/take-while.html