Scala List length() 方法与示例

length()方法用于查找列表的长度。

Method Definition: def length: Int

Return Type: 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)
      
    }
} 

输出：

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)
          
    }
} 

输出：

0