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This article mainly introduces "Scala value and variable example Analysis". In daily operation, I believe many people have doubts about Scala value and variable example analysis. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "Scala value and variable example analysis"! Next, please follow the editor to study!

Definition: val constant var variable

For example:

Val gender= "male" (object immutable)

Var name: String= "ChinaHadoop" (object changeable)

So val or var?

The analysis is as follows:

Generally use val, avoid using var

Officially, because the object is variable, you may forget to initialize the variable, which leads to the problem of obtaining data downstream.

To put it simply: val is safer and more readable.

At this point, the study of "example analysis of Scala values and variables" is over. I hope to be able to solve your 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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