Scala List filter() method with example

The filter() method is utilized to select all elements of the list which satisfies a stated predicate.

Method Definition: def filter(p: (A) => Boolean): List[A]

Return Type: It returns a new list consisting all the elements of the list which satisfies the given predicate.

Example #1:

// Scala program of filter()
// method

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(5, 12, 3, 13)

        // Applying filter method
        val result = m1.filter(_ < 10)

        // Displays output
        println(result)

    }
}

Output:

List(5, 3)

Example #2:

// Scala program of filter()
// method

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(5, 12, 3, 13)

        // Applying filter method
        val result = m1.filter(_ < 3)

        // Displays output
        println(result)

    }
}

Output:

List()

Here, an empty list is returned as none of the elements satisfy the stated predicate.