Scala List take()用法及代码示例

take()方法属于类List的值成员。它用于从列表中获取前n个元素。

函数定义: deftake(n: Int): List[A]

Where, n is the number of elements to be taken from the list.

返回类型: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.

范例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)

范例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)

相关用法

注：本文由纯净天空筛选整理自nidhi1352singh大神的英文原创作品 Scala List take() method with example。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。