Question

我必须代表两个HTML网站内容的字符串。我要删除空格和注释，计算它们之间的Levenshtein距离，并在此基础上决定是否类似。我创建了函数：

  val removeWhiteSpacesAndHtmlComments: String => String = _.replaceAll("\\s+","\\s").replaceAll("<!--.*?-->","")
  val prepareContents: (String,String) => (String,String) = (s1,s2) => (removeWhiteSpacesAndHtmlComments.apply(s1), removeWhiteSpacesAndHtmlComments(s2))
  val computeLevenshteinDistance:(String,String) => Int = StringUtils.getLevenshteinDistance(_,_)
  val areContentsSimilarEnough: Int => Boolean = _ <= 50

我想将所有这些功能组合成一个流程：

val isHtmlContentChanged: (String,String) => Boolean = prepareContents.tupled andThen computeLevenshteinDistance andThen areContentsSimilarEnough

不幸的是，在computeLevenshteinDistance部分出现了异常：

Type mismatch, expected: (String,String) => NotInferedA, actual: (String,String)=>Int

如何解决这个问题？

Answer 1

将.tupled添加到computeLevenshteinDistance。

Try it out!

Scala-功能方法-预期的NotInferedA

1 个答案: