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This article mainly introduces "what is the method of Scala function feature programming". In daily operation, I believe that many people have doubts about the method of Scala function feature programming. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "what is the method of Scala function feature programming?" Next, please follow the editor to study!

When a function is used without arguments, we can omit the parentheses when we call it:

Then define an anonymous function, call it, and run it:

In Scala, the general function is a first-class citizen, so we can pay the function to a constant:

Another feature is the Corialization of Scala functional programming, which allows two parentheses when a function is defined:

This kind of code is very common in the source code of Spark.

Let's take a look at the use of variable parameters in Scala:

Next, take a look at the default parameters:

At this point, the study of "what is the method of Scala function feature programming" is over. I hope to be able to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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