Javaslang core data type analysis

Javaslang is a functional programming library for Java programming language. It introduces many core data types to easier the concept of functional programming in Java.This article will analyze the core data type of Javaslang and provide the necessary Java code examples. Javaslang provides many functional data types corresponding to the native data type of Java.The following are some of the core data types and characteristics of Javaslang: 1. Tuple: The meta -group is a data structure that can accommodate multiple different types of values and cannot be changed.Its size is fixed and is usually used to process multiple values as a single unit. Below is a sample code using Javaslang to create Tuple: Tuple2<String, Integer> tuple = Tuple.of("John", 30); System.out.println (tuple._1); // Output: "John" System.out.println (tuple._2); // Output: 30 2. Option (Options): Option is used to indicate the value that may exist or may not exist, and it can avoid air pointer abnormalities.Option can be SOME or NONE. Below is an example code using Javaslang to create Option: Option<String> optionalName = Option.of("John"); System.out.println (optionalName.isdefined ()); // Output: true System.out.println (optionalName.get ()); // Output: "John" Option<String> optionalEmpty = Option.none(); System.out.println (optionalempty.isempty ()); // Output: true 3. Either (either): Either is similar to Option, but can retain other types of additional information when existence.Either can be left (left) or Right. Below is an example code using Javaslang to create Either: Either<String, Integer> either = Either.left("Error"); System.out.println (either.islect ()); // Output: true System.out.println (either.GetLeft ()); // Output: "error" 4. TRY (try): TRY is used to indicate operations that may cause abnormal operation and provide an alternative value when the operation fails.TRY can be Success or Failure. Below is a sample code using Javaslang to create TRY: Try<Integer> result = Try.of(() -> Integer.parseInt("123")); System.out.println (result.issuccess ()); // Output: true System.out.println (result.get ()); // Output: 123 Try<Integer> failure = Try.of(() -> Integer.parseInt("abc")); System.out.println (failure.isfailure ()); // Output: true: true System.out.println (failure.getorelse (0)); // Output: 0: 0 In addition to the above core data types, JavaSlang also provides many other data types and functions, such as collection types (List, SET, MAP), function types (Function, Predicate, SUPPLIER), etc., to achieve more pure functional programmingEssence You can use it by adding Javaslang dependencies to the project's Maven or Gradle configuration file.For example, using maven, you can add the following dependencies to pom.xml: <dependencies> <dependency> <groupId>io.javaslang</groupId> <artifactId>javaslang</artifactId> <version>3.0.0</version> </dependency> </dependencies> In short, the core data type of Javaslang enables Java developers to better use the concept of functional programming and benefit from invariant, air safety and abnormal processing functions.By using these data types, we can write more robust and maintainable code and better handle various boundaries.