當前位置: 首頁>>代碼示例 >>用法及示例精選 >>正文


Scala Map size()用法及代碼示例


size()用於在指定的映射中查找鍵/值對的數量。

函數定義: def size: Int

返回類型: It returns the number of elements in the map.



範例1:

// Scala program of size() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a map 
        val m1 = Map(3 -> "geeks", 1 -> "for", 2 -> "cs") 
          
        // Applying size method 
        val result = m1.size 
          
        // Displays output 
        println(result) 
      
    } 
}
輸出:
3

範例2:

// Scala program of size() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a map 
        val m1 = Map(3 -> "geeks", 1 -> "for", 1 -> "cs") 
          
        // Applying size method 
        val result = m1.size 
          
        // Displays output 
        println(result) 
          
    } 
}
輸出:
2


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 Map size() 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。