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Scala Set dropWhile()用法及代碼示例


dropWhile()方法用於從滿足指定條件的集合中刪除元素的最長前綴。

函數定義: def dropWhile(p: (A) => Boolean): Set[A]

返回類型: It returns a set containing all the elements after dropping the longest prefix of elements from the set that satisfies the stated condition.



範例1:

// Scala program of dropWhile()  
// method  
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a list  
        var s1 = Set(1, 3, 5, 4, 2)  
          
        // Print the set 
        println(s1) 
          
        // Applying dropWhile method  
        var res = s1.dropWhile(x => {x % 2 != 0})  
          
        // Displays output  
        println(res)  
      
    }  
} 
輸出:
Set(5, 1, 2, 3, 4)
Set(2, 3, 4)

範例2:

// Scala program of dropWhile()  
// method  
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating a list  
        var s1 = Set(1, 3, 5, 4, 2)  
          
        // Print the set 
        println(s1) 
          
        // Applying dropWhile method  
        var res = s1.dropWhile(x => true)  
          
        // Displays output  
        println(res)  
      
    }  
} 
輸出:
Set(5, 1, 2, 3, 4)
Set()


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注:本文由純淨天空篩選整理自rupesh_rao大神的英文原創作品 Scala Set dropWhile() method with example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。