Question

How to concatenate maps in Scala

Answer 1

object MyClass {
    def main(args: Array[String]): Unit = {
        val mp1 = Map("scala" -> 4, "php" -> 2, "c++" -> 7, "python" -> 3);
        val mp2 = Map("java" -> 8, "c" -> 5, "c#" -> 9);

        var mp = mp1 ++ mp2;

        for ((k, v) <- mp) 
            printf("key: %s value: %d\n", k, v);
    }
}
   
   
   
   
/*
run:
   
key: java value: 8
key: c++ value: 7
key: php value: 2
key: scala value: 4
key: python value: 3
key: c value: 5
key: c# value: 9
   
*/

 

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