Scala Map Manipulation

"no") res1: scala.collection.immutable.Map[String,String] = Map(yes -> no)"> "no") res1: scala.collection.immutable.Map[String,String] = Map(yes -> no)"> "no") res1: scala.collection.immutable.Map[String,String] = Map(yes -> no)">

Welcome to Scala 2.12.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_192).
Type in expressions for evaluation. Or try :help.

scala> Map() ++ None
res0: scala.collection.immutable.Map[Nothing,Nothing] = Map()

scala> Map() ++ Some("yes" -> "no")
res1: scala.collection.immutable.Map[String,String] = Map(yes -> no)