value foldLeft is not a member of (String, Seq[String])

[Deepak-Vohra]

Ch 6, the following code snippet generates an error.

import scala.collection.mutable.HashMap
val docTermFreqs = lemmatized.map(terms => {
val termFreqs = terms.foldLeft(new HashMap[String, Int]()) {
(map, term) => {
map += term -> (map.getOrElse(term, 0) + 1)
map
}
}
termFreqs
})

The error is

<console>:64: error: value foldLeft is not a member of (String, Seq[String])
       val termFreqs = terms.foldLeft(new HashMap[String, Int]()) {

[srowen]

You should use back-ticks to format code; I edited it above. This is basically the same thing, you're using a lemmatized that was not also created according to the listing in the book.

[Deepak-Vohra]

The lemmatized is not from the repo either. The error is generated with the following lemmatized from repo.

val lemmatized = plainText.mapPartitions(iter => {
      val pipeline = createNLPPipeline()
      iter.map{ case(title, contents) => (title, plainTextToLemmas(contents, stopWords, pipeline))}
    })

[srowen]

Same answer as before. I think you understand the issue right?

[Deepak-Vohra]

Yes, the lemmatized is not defined properly.