Scala Map take() 方法与示例

take()方法用于选择地图的前“n”个元素。

Method Definition: def take(n: Int): Map[A, B]

Return Type: It returns the first ‘n’ elements of the map.

示例 #1：

// Scala program of take()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map(3 -> "geeks", 4 -> "for", 2 -> "cs")
          
        // Applying take method
        val result = m1.take(2)
          
        // Displays output
        println(result)
      
    }
}

输出：

Map(3 -> geeks, 4 -> for)

示例 #2：

// Scala program of take()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map(3 -> "geeks", 4 -> "for", 2 -> "cs")
          
        // Applying take method
        val result = m1.take(4)
          
        // Displays output
        println(result)
      
    }
}

输出：

Map(3 -> geeks, 4 -> for, 2 -> cs)