How to append a list in Scala

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Can anyone explain how can we use Scala to append to a List?
Jul 26, 2019 in Apache Spark by Nishant
2,687 views

1 answer to this question.

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Hey,

For this purpose, we use the single value ‘:+’.

scala> var a=List.empty[String]

a: List[String] = List()

scala> a :+="red"

scala> a :+="green"

scala> a :+="blue"

scala> a

The output will be:

List[String] = List(red, green, blue)

Now to append a list to it:

scala> a++=List("golden","bronze")

scala> a

The output will be:

List[String] = List(red, green, blue, golden, bronze)

answered Jul 26, 2019 by Gitika
• 65,870 points

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