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This article mainly explains "what is the method of scala variable length parameter". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the method of scala variable length parameter".

Like java, scala can also use variable parameters in methods. Here are two ways to use variable parameters.

/ * Test variable parameters * / @ Test def testVariables (): Unit = {/ * Note: * * @ param args * / def echo (args: String*): Unit = {args.foreach (println (_))} echo ("a", "b") / * _ * symbol. This annotation tells the compiler to treat each element of arr as a parameter, rather than passing * / val arr = Array ("What's", "up", "doc?") as a single parameter. Echo (arr:_*)} Thank you for your reading, the above is the content of "what is the method of scala variable length parameters". After the study of this article, I believe you have a deeper understanding of what the method of scala variable length parameters is, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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