Concatenate Two Maps in Scala
Last Updated :
13 Aug, 2019
The concatenation of Scala map is obtained by utilizing ++ operator.
Syntax :
def ++(xs: Map[(A, B)]): Map[A, B]
Return Type:
It returns a single map by concatenating two maps but it separates the identical keys.
Example #1:
object GfG
{
def main(args : Array[String])
{
val m 1 = Map( "Nidhi" - > 23 , "Rahul" - > 18 )
val m 2 = Map( "Geeta" - > 22 , "Rahul" - > 18 )
val result = m 1 .++(m 2 )
println(result)
}
}
|
Output:
Map(Nidhi -> 23, Rahul -> 18, Geeta -> 22)
As we can see in above example, we joined two maps by using ++ operator.
Example #2:
object GfG
{
def main(args : Array[String])
{
val m 1 = Map( "geeks" - > 5 , "for" - > 3 )
val m 2 = Map( "geeks" - > 5 , "cs" - > 2 )
val result = m 1 .++(m 2 )
println(result)
}
}
|
Output:
Map(geeks -> 5, for -> 3, cs -> 2)
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