Scala List takeWhile() method with example

The takeWhile() method is utilized to find the elements from the list as long as the stated condition is satisfied.

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

Return Type: It returns the elements from the list as long as the stated condition is satisfied.

Example #1:

// Scala program of takeWhile()
// method

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(1, 2, 3, 4, 5, 7)

        // Applying takeWhile method
        val result = m1.takeWhile(_ < 5)

        // Displays output
        println(result)

    }
}

Output:

List(1, 2, 3, 4)

Example #2:

// Scala program of takeWhile()
// method

// Creating object
object GfG
{

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

        // Creating a list
        val m1 = List(1, 2, 3, 4, 5, 7)

        // Applying takeWhile method
        val result = m1.takeWhile(_ > 4)

        // Displays output
        println(result)

    }
}

Output:

List()