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Scala List length()用法及代碼示例


length()方法用於查找列表的長度。

函數定義: def length: Int

返回類型: It returns the length of the list stated.



示例:1#

// Scala program of length() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a list 
        val m1 = List(3, 4, 5, 7, 8) 
          
        // Applying length method 
        val result = m1.length 
          
        // Displays output 
        println(result) 
      
    } 
} 
輸出:
5

示例:2#

// Scala program of length() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a list 
        val m1 = List() 
          
        // Applying length method 
        val result = m1.length 
          
        // Displays output 
        println(result) 
          
    } 
} 
輸出:
0


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