Scala Map addString()用法及代码示例

此方法与addString()方法相同，但此处还包括分隔符。

函数定义： def addString(b:StringBuilder, sep:String):StringBuilder

Where, sep is the separator stated.

返回类型： It returns the elements of the map in the String Builder and a separator is also added between the elements of the map.

范例1：

// Scala program of addString() 
// method with a separator 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a map 
        val m1 = Map("geeks" -> 5, "for" -> 3, "cs" -> 2) 
          
        // Applying addString method 
        // and a separator 
        val result = m1.addString(new StringBuilder(), "_")  
          
        // Displays output 
        println(result) 
      
    } 
}

输出：

geeks -> 5_for -> 3_cs -> 2

范例2：

// Scala program of addString() 
// method with a separator 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a map 
        val m1 = Map("geeks" -> 5, "for" -> 3, "geeks" -> 2) 
          
        // Applying addString method 
        // and a separator 
        val result = m1.addString(new StringBuilder(), "_")  
          
        // Displays output 
        println(result) 
          
    } 
}

输出：

geeks -> 2_for -> 3

因此，此处删除了相同的键。

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注：本文由纯净天空筛选整理自nidhi1352singh大神的英文原创作品 Scala Map addString() method with a separator with example。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。