Scala將XML導入地圖

Question

我剛學習scala，並試圖將XML文件導入到Map中。 XML保存使用<word></word>和<description></description>的定義。當我嘗試創建地圖時出現錯誤：

Value update is not member of scala.collection.immutable.Map[String, String] 

任何指針，將不勝感激！

package main 
import scala.xml._ 

object main { 

    def main(args: Array[String]): Unit = { 
    val definitions = XML.load("src\\main\\Definitions.xml"); 
    val definitionMap = (Map[String, String]() /: (definitions \ "word")) { (map , defNode) => 
     val word = (defNode \ "word").text.toString() 
     val description = (defNode \ "description").text.toString() 
     map(word) = description 
    } 
    println(definitions.getClass()) 
    println("Number of elements is " + (definitions \\ "word").size) 
    } 

} 

和XML格式爲這樣：

<?xml version="1.0"?> 
<definitions> 
    <entry> 
     <word>Ontology</word> 
     <description>A set of representational primitives with which to model a domain of knowledge or discourse.</description> 
    </entry> 

    <entry> 
     <word>Diagnostic</word> 
     <description>The process of locating problems with software, hardware, or any combination thereof in a system, or a network of systems.</description> 
    </entry> 
    <entry> 
     <word>Malware</word> 
     <description>Software that is intended to damage or disable computers and computer systems.</description> 
    </entry> 
    <entry> 
     <word>Capacitor</word> 
     <description>A device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator.</description> 
    </entry> 
    <entry> 
     <word>Stress Test</word> 
     <description>A test measuring how a system functions when subjected to controlled amounts of stress.</description> 
    </entry> 
    <entry> 
     <word>Registry</word> 
     <description>A hierarchical database that stores configuration settings and options on Microsoft Windows operating systems.</description> 
    </entry> 
    <entry> 
     <word>Antivirus</word> 
     <description>Designed to detect and remove computer viruses.</description> 
    </entry> 
</definitions> 

Answer 1

你不能改變一成不變的數據結構，這是編譯器想要說些什麼。而不是更新，

map(word) = description 

你應該不斷地添加記錄到地圖。

map + (word -> description)