Detailed explanation of the functional data structure of the Javaslang framework

The Javaslang framework is a functional programming library of a Java programming language, which provides some functional data structures and its related operations.In this article, we will introduce the functional data structures in the Javaslang framework in detail and give the corresponding programming code and related configuration. 1 Introduction In traditional object -oriented programming, the data structure often depends on perverted state and command operations.The functional programming emphasizes the operation of the unsatisfactory data and non -side effects, making it easier for programming, testing, and maintenance.The Javaslang framework provides many functional data structures and rich operation methods to help developers better use functional programming styles. 2. Functional data structure in Javaslang Javaslang provides a series of functional data structures. Below we will introduce several important data structures. 2.1. Option Option is a way to process data that may be vacant in Javaslang.It has two possible values: SOME and NONE.SOME indicates that there is a specific value, and NONE indicates that there is no value.Option provides a series of methods to facilitate value processing, such as Map, Flatmap, and Filter. The following is a simple example code using Option: Option <string> nameOption = option.of ("John"); // Create a SOME object String upperName = nameoption.map (string :: ToupperCase) .getorelse (""); // Convert the value to a capital, if there is no value, return the empty string System.out.println (uppername); // Output "John" 2.2. Try Try is a way to process abnormal code blocks in Javaslang.Try has two possible values: Success and Failure.Success indicates successful execution and returns a result, and Failure indicates that abnormalities occur during execution.Try provides a series of methods to facilitate the execution results, such as Map, Flatmap, and Recover. The following is a simple example code using TRY: Try <integer> result = try.of (() -> Integer.parseint ("123"); // Convert the string to an integer to an integer int Num = result.getorelse (0); // Get the integer value after conversion, if an abnormalities appear, return the silent value 0 System.out.println (num); // Output 123 2.3. Tuple Tuple is a data structure used to store a set of different types of values in Javaslang.Tuple can have different lengths. For example, Tuple2 represents a meta -group composed of two values, and TPLE3 represents a metacele group consisting of three values.Tuple provides a series of methods to easily operate the values in the group group, such as Map, Flatmap, and Apply. Below is a simple example code using Tuple: Tuple2 <string, Integer> Person = Tuple.of ("John", 30); // Create a tuple containing names and age String name = Person._1; // Get the first value in the cluster, that is, name int Age = Person._2; // Get the second value in the cluster, that is, age System.out.println (name + " -" + Age); // Output "John -30" 3. Javaslang configuration When using the Javaslang framework, you need to add corresponding dependencies to the configuration file of the project.You can manage the dependencies through building tools such as Maven or Gradle. Below is an example configuration file using Maven: <dependencies> <dependency> <groupId>org.javaslang</groupId> <artifactId>javaslang</artifactId> <version>3.0.0</version> </dependency> </dependencies> 4 Conclusion This article details the functional data structure in the Javaslang framework, and gives relevant programming code and configuration information.Using the Javaslang framework can make the Java programming language more functional programming, improve the readability and maintenance of the program.It is hoped that through the introduction of this article, it can help readers better understand and apply functional data structures in the Javaslang framework.