scala list addall

In Scala, the addAll method is used to add multiple elements from one collection to another collection. The addAll method is available on mutable collections such as ListBuffer, ArrayBuffer, and MutableList. It allows you to append all elements from another collection to the end of the current collection.

Here's an example of how to use the addAll method in Scala:

import scala.collection.mutable.ListBuffer

// Create a ListBuffer
val listBuffer1 = ListBuffer(1, 2, 3)

// Create another ListBuffer
val listBuffer2 = ListBuffer(4, 5, 6)

// Use addAll to append elements from listBuffer2 to listBuffer1

// Print the updated listBuffer1

This will output:

ListBuffer(1, 2, 3, 4, 5, 6)

In the above example, we first create two ListBuffer instances named listBuffer1 and listBuffer2. We then use the addAll method on listBuffer1 to append all elements from listBuffer2. Finally, we print the updated listBuffer1 to verify that the elements have been added successfully.

You can use the addAll method with other mutable collections in Scala in a similar way to add multiple elements to a collection.