- Scala Collections Tutorial
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- Scala Collections - Lists
- Scala Collections - List
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- Scala Collections - ListSet
- Scala Collections - Vector
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- Scala Collections - Miscellaneous
- Scala Collections - Iterator
- Scala Collections - Option
- Scala Collections - Queue
- Scala Collections - Tuple
- Scala Collections - Seq
- Scala Collections - Stack
- Scala Collections - Stream
- Scala Collections Combinator methods
- Scala Collections - drop
- Scala Collections - dropWhile
- Scala Collections - filter
- Scala Collections - find
- Scala Collections - flatMap
- Scala Collections - flatten
- Scala Collections - fold
- Scala Collections - foldLeft
- Scala Collections - foldRight
- Scala Collections - map
- Scala Collections - partition
- Scala Collections - reduce
- Scala Collections - scan
- Scala Collections - zip
- Scala Collections Useful Resources
- Scala Collections - Quick Guide
- Scala Collections - Useful Resources
- Scala Collections - Discussion
Scala Collections - DropWhile Method
dropWhile() method is method used by List to drop all elements which satisfies a given condition.
Syntax
The following is the syntax of dropWhile method.
def dropWhile(p: (A) => Boolean): List[A]
Here, p: (A) => Boolean is a predicate or condition to be applied on each element of the list. This method returns the all the elements of list except dropped ones.
Usage
Below is an example program of showing how to use dropWhile method −
Example
object Demo {
def main(args: Array[String]) = {
val list = List(3, 6, 9, 4, 2)
// print list
println(list)
//apply operation
val result = list.dropWhile(x=>{x % 3 == 0})
//print result
println(result)
}
}
Save the above program in Demo.scala. The following commands are used to compile and execute this program.
Command
\>scalac Demo.scala \>scala Demo
Output
List(3, 6, 9, 4, 2) List(4, 2)
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