📜  Scala SortedMap filter() 方法示例

📅  最后修改于: 2022-05-13 01:55:39.114000             🧑  作者: Mango

Scala SortedMap filter() 方法示例

filter()方法用于选择 SortedMap 中满足指定谓词的所有元素。

示例 #1:

// Scala program of filter()
// method
import scala.collection.immutable.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)
      
    }
}
输出:
Map(geeks -> 5)

示例 #2:

// Scala program of filter()
// method
import scala.collection.immutable.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)
      
    }
}
输出:
Map()

在这里,一个空的 SortedMap 被返回,因为没有一个元素满足所述谓词。