Scala Set diff() 方法与示例

diff()方法用于计算一个集合和另一个集合的差异。

Method Definition: def diff(that: Set[A]): Set[A]

Return Type: It returns a set which is the difference between two sets.

示例 #1：

// Scala program of diff()
// method
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating sets 
        val s1 = Set(1, 2, 3, 4, 5)
          
        val s2 = Set(1, 2, 3)
          
        // Applying diff method 
        val s3 = s1.diff(s2) 
          
        // Displays output 
        for(elem <- s3)  
        println(elem) 
      
    } 
}

输出：

5
4

示例 #2：

// Scala program of diff()
// method
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating sets 
        val s1 = Set(1, 2, 3, 4, 5)
          
        val s2 = Set(6, 2, 7, 8)
          
        // Applying diff method 
        val s3 = s1.diff(s2) 
          
        // Displays output 
        for(elem <- s3)  
        println(elem) 
      
    } 
}

输出：