Scala Product Map Values

In Scala the product of the map elements can be done by utilizing foldLeft method.

Syntax: m1.foldLeft(1)(_*_._1)

Here, m1 is used for a Map, foldLeft is a method that takes an initial value one for product. it will take previous result and multiply it to the next map key value. * and use 1 for the initial value to get the product of values.

Return Type: It returns the product of all the elements of the map.

Example #1:

// Scala program of product()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating a map
        val m1 = Map(3 -> "geeks", 2 -> "for", 4 -> "for")

        // Applying product method
        val result = m1.foldLeft(1)(_*_._1)

        // Displays output
        println(result)

    }
}

Output:

24

Here, one in the foldLeft method is the initial value.
Example #2:

// Scala program of product()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating a map
        val m1 = Map(3 -> "geeks", 4 -> "for", 4 -> "for")

        // Applying product method
        val result = m1.foldLeft(1)(_*_._1)

        // Displays output
        println(result)

    }
}

Output:

12