High -level functions and Curry in the VAVR framework

High -level functions and Curry in the VAVR framework introduction: With the popularity of functional programming in modern software development, high -level functions and Curry have become the concept that programmers cannot ignore.Vavr is a popular Java functional programming library that provides rich high -end functions and Corride support.This article will introduce the concepts of high -level functions and Curry in the VAVR framework and how to use them in the Java code. High -level function: A high -level function refers to a function that can accept one or more functions as a parameter and return a function.In VAVR, high -level functions can be implemented through functional interface `function` and` bifunch.A commonly used high -level function is `Map`, which accepts a function as a parameter and applies the function to each element in the input stream.Below is an example of double each element in the list using the `map` function: List<Integer> numbers = List.of(1, 2, 3, 4, 5); List<Integer> doubledNumbers = numbers.map(x -> x * 2); System.out.println (doublednumbers); // output [2, 4, 6, 8, 10] In the above example, we used the `Map` function to multiply each element in the input list and get a new list` Doublenumbers`. Curihua: Corride refers to a process that converts a multi -parameter function into a series of functions with only one parameter.In VAVR, you can use the `function.currow` method to achieve Corrilation.The following is an example of using a Curry function: Function2<Integer, Integer, Integer> sum = (x, y) -> x + y; Function1<Integer, Function1<Integer, Integer>> curriedSum = sum.curried(); int result = curriedSum.apply(1).apply(2); System.out.println (result); // Output 3 In the above example, we define a function that accepts two integers and returns the sum of them `Sum`.Then, we use the `curried` method to convert the` Sum` function into a CurriedSum`.Finally, we call the Curry function through the parameter 1 and 2 through the `apply` method to get the calculation results 3. The combination of high -level functions and Curry: High -level functions and Curry can be used in conjunction to create more flexible and easy -to -reuse functions.Below is an example of connecting two functions: Function1<Integer, Integer> multiplyByTwo = x -> x * 2; Function1<Integer, Integer> addThree = x -> x + 3; Function1<Integer, Integer> multiplyAndAdd = multiplyByTwo.andThen(addThree); int result = multiplyAndAdd.apply(2); System.out.println (result); // Output 7 In the above example, we define two functions `Multiplybytwo` and` addthree`, and use the `Andthen` method to connect them in series to get a new function` Multiplyandadd`.Finally, we pass the parameter 2 through the `apply` method to call the new function and get the calculation results 7. in conclusion: The high -level functions and Curry in the VAVR framework provide us with powerful tools, making functional programming easier and flexible in Java.Through reasonable use of high -level functions and Curry, we can write more concise and readable code to improve the efficiency and quality of software development. It is hoped that this article can help readers understand the high -level functions in the VAVR framework and the concepts of Curry, and make full use of their advantages in actual development. Appendix: The complete VAVR code example can be found on the official website of the VAVR (https://www.vavr.io/).