當前位置: 首頁>>代碼示例 >>用法及示例精選 >>正文


Scala Stream head()用法及代碼示例


head()方法用於顯示所述流的第一個元素。

函數定義: def head: A

返回類型: It returns the first element of the stated Stream.



範例1:

// Scala program of head() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a Stream 
        val m1 = Stream(3, 6, 7, 4) 
          
        // Applying head method 
        val result = m1.head 
          
        // Displays output 
        println(result) 
      
    } 
}
輸出:
3

範例2:

// Scala program of head() 
// method 
   
// Creating object 
object GfG 
{   
     
    // Main method 
    def main(args:Array[String]) 
    { 
        
        // Creating a Stream 
        val m1 = Stream(6, 8, 9, 12) 
            
        // Applying head method 
        val result = m1.head 
             
        // Displays output 
        println(result) 
        
    } 
}
輸出:
6


相關用法


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