Use the Lodash framework for array operation

Use the Lodash framework for array operation Lodash is a popular JavaScript library that is used to simplify the writing of JavaScript code and provide more functions.It contains many convenient methods, which can be used to operate and handle arrays.This article will introduce some commonly used Lodash array operation methods and provide Java example code. First of all, we need to ensure that the Lodash library has been introduced correctly.It can be implemented by adding Lodash.js files in the project or installing Lodash bags with NPM.The following is an example Java code that shows how to use Lodash in the project. import org.graalvm.polyglot.*; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; public class LodashExample { public static void main(String[] args) throws IOException { // Read and execute the code of the lodash library String lodashCode = new String(Files.readAllBytes(Paths.get("path/to/lodash.js"))); Context polyglot = Context.create(); polyglot.eval("js", lodashCode); // Call the lodash method to operate the array polyglot.eval("js", "var array = [1, 2, 3, 4, 5];"); polyglot.eval("js", "var filteredArray = _.filter(array, function(element) { return element > 2; });"); Value filteredArrayValue = polyglot.getBindings("js").getMember("filteredArray"); System.out.println(filteredArrayValue.as(List.class)); } } The above example code demonstrates how to filter the elements in the array in the array of the `Filter` method of Lodash.First, we read the code of the lodash library and execute it in the Polyglot context.Next, we create an array called `Array`, and use the` _.filter` method to filter the elements in the element of 2 in the `array`.Finally, we obtained the filtering array through Java's Polyglot API, converted it to the List object of Java, and finally printed out the output. In addition to the `Filter` method, Lodash also provides many other useful array operation methods.Here are some commonly used Lodash methods: -`Map`: Create a new array by the function given by each element. polyglot.eval("js", "var mappedArray = _.map(array, function(element) { return element * 2; });"); -`Reduce`: A function given by each element in the array to reduce the array to a value. polyglot.eval("js", "var sum = _.reduce(array, function(acc, element) { return acc + element; }, 0);"); -` Slice`: Create a group copy that starts to cut from the specified index. polyglot.eval("js", "var slicedArray = _.slice(array, 2, 4);"); -` Concat`: combined multiple numbers into an array. polyglot.eval("js", "var newArray = _.concat(array, [6, 7, 8]);"); -` UNIQ`: Return to an array after weighing. polyglot.eval("js", "var uniqueArray = _.uniq(array);"); -` sortby`: sort the array according to the specified attribute. polyglot.eval("js", "var sortedArray = _.sortBy(array, ['name']);"); -Phunk`: Disassemble a array according to the specified size into multiple sets of blocks. polyglot.eval("js", "var chunkedArray = _.chunk(array, 2);"); The above is just a small part of the Lodash array operation method. There are more methods that can operate and transform the array.With the help of Lodash, we can easily handle and operate arrays to improve development efficiency. Therefore, the LODASH framework provides a wealth of array operation methods, which can easily filter, mappore, return, split, etc. of the array.Through the introduction of the above example code and common methods, you can better understand how to use lodash for array operations.