Scala List take() 方法与示例
take()方法属于List类的值成员。它用于从列表中获取前n 个元素。
Method Definition: deftake(n: Int): List[A]
Where, n is the number of elements to be taken from the list.
Return Type:It returns a list containing only the first n elements from the stated list or returns the whole list if n is more than the number of elements in the given list.
示例 #1：
// Scala program of take()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a List
val list = List(1, 2, 3, 4, 5, 6, 7)
// Applying take method
val result = list.take(4)
// Displays output
println(result)
}
}
输出：
List(1, 2, 3, 4)
示例 #2：
// Scala program of take()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a List
val list = List("a", "b", "c", "d", "e", "f")
// Applying take method
val result = list.take(4)
// Displays output
println(result)
}
}
输出：
List(a, b, c, d)