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Scala SortedMap transform()用法及代碼示例


transform()方法用於將SortedMap的元素轉換為可變的SortedMap。

函數定義: def transform(f: (K, V) => V): SortedMap.this.type

返回類型: It transforms all the elements of the SortedMap and returns them into a mutable SortedMap.



範例1:

// Scala program of transform() 
// method 
import scala.collection.immutable.SortedMap 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a SortedMap 
        val m1 = SortedMap(3 -> "geeks", 4 -> "for", 2 -> "cs") 
          
        // Applying transform method 
        val result = m1.transform((key, value) => value.toUpperCase) 
          
        // Displays output 
        println(result) 
      
    } 
}
輸出:
Map(2 -> CS, 3 -> GEEKS, 4 -> FOR)

範例2:

// Scala program of transform() 
// method 
import scala.collection.immutable.SortedMap 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a SortedMap 
        val m1 = SortedMap(3 -> "geeks", 4 -> "for", 4 -> "for") 
          
        // Applying transform method 
        val result = m1.transform((key, value) => value.toUpperCase) 
          
        // Displays output 
        println(result) 
      
    } 
}
輸出:
Map(3 -> GEEKS, 4 -> FOR)


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