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Scala Mutable SortedMap transform()用法及代码示例


transform()方法用于将SortedMap的元素转换为可变的SortedMap。

Method Definition: def transform(f:(K, V) => V):SortedMap.this.type

Return Type: It transforms all the elements of the SortedMap and returns them into a mutable SortedMap.

范例1:

// Scala program of transform() 
// method 
import scala.collection.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) 
      
    } 
}
输出:
Map(2 -> CS, 3 -> GEEKS, 4 -> FOR)

范例2:

// Scala program of transform() 
// method 
import scala.collection.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) 
      
    } 
}
输出:
Map(3 -> GEEKS, 4 -> FOR)



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注:本文由纯净天空筛选整理自Shivam_k大神的英文原创作品 Scala Mutable SortedMap transform() method 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。