Scala Mutable SortedMap empty() 方法与示例

empty()方法用于使 SortedMap 为空。

Method Definition: def empty: SortedMap[A, B]

Return Type: It returns an empty SortedMap.

示例 #1：

// Scala program of empty()
// method
import scala.collection.SortedMap
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a SortedMap
        val m1 = SortedMap("geeks" -> 5, "for" -> 3, "cs" -> 2)
          
        // Applying empty method
        val result = m1.empty
          
        // Displays output
        println(result)
      
    }
}

输出：

Map()

示例 #2：

// Scala program of empty()
// method
import scala.collection.SortedMap
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating an empty SortedMap
        val m1 = SortedMap("gopal" -> 10)
          
        // Applying empty method
        val result = m1.empty
          
        // Displays output
        println(result)
      
    }
}

输出：

Map()