带有开头、分隔符和结尾的 Scala Map addString() 方法示例

此方法与addString()方法相同，但这里还包括一个开始、一个分隔符和一个结束。

Method Definition: def addString(sb: mutable.StringBuilder, start: String, sep: String, end: String): mutable.StringBuilder

Where, sep is the separator stated.

Return Type: It returns the elements of the map in the String Builder and a start, a separator and an end is also included here.

示例 #1：

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

输出：

>>>geeks -> 5|for -> 3|cs -> 3--

示例 #2：

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

输出：

>>>geeks -> 5|for -> 3--

因此，这里删除了相同的键。