How to concatenate Maps in Scala

Question

Can anyone provide an example to learn how to concatenate Maps in Scala?

Answer 1

Hey,

You can concatenate/join two Maps in more than one way. Let’s take an example:

scala> var m1=Map("Giti"->3,"Ruchi"->2,"Niti"->4)

m1: scala.collection.immutable.Map[String,Int] = Map(Giti -> 3, Ruchi -> 2, Niti -> 4)

With ++ operator

scala> m++m1

res6: scala.collection.immutable.Map[String,Int] = Map(Ayushi -> 0, Giti -> 3, Ruchi -> 2, Niti -> 4)

scala> m1++m

res7: scala.collection.immutable.Map[String,Int] = Map(Giti -> 1, Ruchi -> 2, Niti -> 4, Ayushi -> 0)

Hope this helps!

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Thanks!!