How to flatten a nested tuple?

scala tuples flatten
zjffdu picture zjffdu · Dec 4, 2012 · Viewed 13.4k times · Source

I have a nested tuple structure like (String,(String,Double)) and I want to transform it to (String,String,Double). I have various kinds of nested tuple, and I don't want to transform each manually. Is there any convenient way to do that?

Answer

xiefei picture xiefei · Dec 4, 2012

If you use shapeless, this is exactly what you need, I think.

Related questions

Convert a Scala list to a tuple?

How can I convert a list with (say) 3 elements into a tuple of size 3? For example, let's say I have val x = List(1, 2, 3) and I want to convert this into (1, 2, 3). How can I do this?

Read More
Scala: map a Map to list of tuples

I tried to use Map.map to convert a map into a List of Tuples. However this fails. I did the following experiments: val m = Map(("a" -> 1), ("b" -> 2)) //> m : scala.collection.immutable.Map[String,Int] = …

Read More
Scala return type for tuple-functions

I want to make a scala function which returns a scala tuple. I can do a function like this: def foo = (1,"hello","world") and this will work fine, but now I want to tell the compiler what I expect to …

Read More