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Scala Iterator drop()用法及代碼示例


drop()方法屬於類Abstract Iterator的具體值成員。它在類Iterator和IterableOnceOps中定義。它用於將迭代器向前移動n個位置,如果n大於迭代器的長度,則它將引發異常。

函數定義: def drop(n:Int):Iterator[A]

Where, n is the number of elements to be dropped from the stated iterator.



返回類型: It returns all the elements of the stated iterator except the first n ones.

範例1:

// Scala program of drop() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating an Iterator  
        val iter = Iterator(4, 6, 10, 11, 13) 
          
        // Applying drop method 
        val x = iter.drop(4) 
          
        // Applying next method 
        val result = x.next() 
          
        // Displays output 
        println(result) 
      
    } 
}
輸出:
13

在此,將刪除前四個元素,然後返回之後的所有元素。
範例2:

// Scala program of drop() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating an Iterator  
        val iter = Iterator(2, 3, 4) 
          
        // Applying drop method 
        val x = iter.drop(1) 
          
        // Applying next method 
        val result = x.next() 
          
        // Displays output 
        println(result) 
          
    } 
}
輸出:
3


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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 Iterator drop() 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。