Zip multiple sequences

Question

I am trying to zip multiple sequences to form a long tuple:

val ints = List(1,2,3)
val chars = List(\'a\', \'b\', \'c\')
val strings = List(\"Al         


        

Answer 1

I would create a class which represents the data sets:

case class DataSet(int: Int, char: Char, string: String, bool: Boolean)

This brings nicer names for accessing the values instead of _N we have in tuples. If the lists can have different sizes the shortest should be chosen:

val min = List(ints, chars, strings, bools).map(_.size).min

Now it is possible to extract the data:

val dataSets = (0 until min) map { i => DataSet(ints(i), chars(i), strings(i), bools(i)) }

When the original lists can contain a lot of values it is better to make them to a IndexedSeq so that the access time is O(1).