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Scala List dropWhile()用法及代碼示例


dropWhile()方法用於刪除滿足指定條件的元素的最長前綴。

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

返回類型: It returns all the elements of the list except the dropped ones.



範例1:

// Scala program of dropWhile() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a list 
        val m1 = List(1, 3, 5, 4, 2) 
          
        // Applying dropWhile method 
        val res = m1.dropWhile(x=>{x % 2 != 0}) 
          
        // Displays output 
        println(res) 
      
    } 
}
輸出:
List(4, 2)

範例2:

// Scala program of dropWhile() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a list 
        val m1 = List(3, 6, 5, 4, 2) 
          
        // Applying dropWhile method 
        val res = m1.dropWhile(x=>{x % 3 == 0}) 
          
        // Displays output 
        println(res) 
      
    } 
}
輸出:
List(5, 4, 2)


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注:本文由純淨天空篩選整理自nidhi1352singh大神的英文原創作品 Scala List 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。