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:

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// 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)
      
    }
}

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Output:

List(1, 2, 3, 4)

Example #2:

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// 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)
      
    }
}

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Output:

List()


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