Scala Mutable SortedMap的过滤方法filter()及其示例

filter()方法用于选择所有满足所述谓词的SortedMap元素。

方法定义：def filter(p: ((A, B)) => Boolean): SortedMap[A, B]

返回类型：返回一个新的SortedMap，其中包含满足给定谓词的所有SortedMap元素。

示例1：

// Scala program of filter()
// method
import scala.collection.SortedMap
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating SortedMap
        val m1 = SortedMap("geeks" -> 5, "for" -> 3)
          
        // Applying filter method
        val result = m1.filter(x => x._1 == "geeks" && x._2 == 5)
          
        // Displays output
        println(result)
      
    }
}

Map(geeks -> 5)

示例2：

// Scala program of filter()
// method
import scala.collection.SortedMap
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating SortedMap
        val m1 = SortedMap("geeks" -> 5, "for" -> 3)
          
        // Applying filter method
        val result = m1.filter(x => x._1 == "for" && x._2 == 5)
          
        // Displays output
        println(result)
      
    }
}