通过`in-code variable inspection`调试scala中的过滤器操作[重复]

def main(args:Array[String]){

Logger.getLogger("org").setLevel(Level.ERROR)
val sc = new SparkContext("local[*]","WordCountRe")
val input = sc.textFile("data/book.txt")
//With regexp
val words = input.flatMap(x=>x.split("\\W+"))
//Lower case
val lowerCaseWords = words.map(x => x.toLowerCase())
val wordCounts = lowerCaseWords.map(x => (x,1)).reduceByKey((x,y)=>x+y)
val sortedWordCounts = wordCounts.sortBy(-_._2)
val commonEnglishStopWords = List("you","to","your","the","a","of","and","that","it","in","is","for","on","are","if","s","i","with","t","this","or","but","they","will","what","at","my","re","do","not","about","more","an","up","need","them","from","how","there","out","new","work","so","just","don","","get","their","by","some","ll","self","make","may","even","when","one","than","also","much","job","who","was","these","find","into","only")
val filteredWordCounts = sortedWordCounts.filter{
  x =>
    val inspectVariable = commonEnglishStopWords.contains(x._1)} //Error here
filteredWordCounts.collect().foreach(println)   } }

当我尝试使用此代码时，出现编译错误：

类型不匹配; 发现：需要的单位：布尔WordCountRe.scala / SparkScalaCourse / src / com / sundogsoftware / spark line 29 Scala问题

发现我的代码出了什么问题（._1为了解析元组中的单词（word，count）需要放入包含），但我仍然不知道在这种情况下如何调试/检查值。