How to transform:
(Map(UserLang -> en, UserName -> a),1)
(Map(UserLang -> jp, UserName -> b),1)
to
(UserLang -> en, UserName -> a)
(UserLang -> jp, UserName -> b)
How to do this via functional programming
Add a comment
|
2 Answers
Try something like this:
val map1: Map[(String, String),Int]
val map2: Map[String, String] = map1.keySet.toMap
.keySet discards the Int and turns your Map[(String, String),Int] into a Set[(String,String)] which you can then easily convert to a Mapby calling toMap.
4 Comments
Anand
I am doing this in spark using scala,your example gave me idea atleast how to proceed there,thanks :)
Luka Jacobowitz
If you expand on your question, I can also add more details to my answer :) Then we can also help people who might encounter this problem in the future!
Anand
stackoverflow.com/questions/38333479/… after getting your pointer,I am able to seggregate wanted MAP,using below code: topCounts60.foreachRDD( rdd => { for(item <- rdd.keys.collect().toArray) { println(item); } })
Luka Jacobowitz
Maybe you should put that into your question, or feel free to edit my answer :)
(Map(UserLang -> en, UserName -> a),1) is type (Map[String,String], Int) and not Map[(String,String),Int] as stated in the question title.
For the former, try map(_._1). For the latter try keys.toMap.
