How to integrate and expand the UNDERSCORE framework in the Java class library

How to integrate and expand the UNDERSCORE framework in the Java class library Introduction: UNDERSCORE is a Java class library based on functional programming thoughts. It provides a set of powerful tool functions for operation and processing collection, array and object data.This article will introduce how to integrate and extend the Underscore framework in the Java library to better use its functions. Integrated Underscore framework: The following is the step of integrating the UNDERSCORE framework in the Java library: Step 1: Download and import the UNDERSCORE framework. First, download the latest version of the framework from Underscore's official website.Then guide the library into the project of the Java library.This can be achieved by adding JAR files to the construction path of the project. Step 2: Import the Underscore library. In the source code of the Java library, the naming space of the Underscore library is introduced.Introduce the following code example: import com.github.underscore._; Step 3: Use the UNDERSCORE function. In the code of the Java library, the function defined in the UNDERSCORE library can be used directly.For example, use the `_.each` function to iterate a collection: List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); _.each(numbers, (number) -> System.out.println(number)); This will output each number in the output collection `numbers`. Extend the UNDERSCORE framework: The following is the step of expanding the UNDERSCORE framework to meet specific needs: Step 1: Create a custom function. In the source code of the Java class library, write a custom function to meet specific needs.You can use the functions provided in the UNDERSCORE framework as a reference to ensure that the function follows the same functional programming ideas and code styles. Step 2: Add the custom function to the Underscore library. Add the custom function to the UNDERSCORE library so that the reference access of the UNDERSCORE library in the project.This can be implemented by adding a custom function to the source code of the Underscore library and re -constructing the library to achieve it. Step 3: Use a custom function. In the code of the Java library, the expansion of the UNDERSCORE library is used by introducing the naming space of the UNDERSCORE library and using a custom function.For example, use the custom `_.myfunction` function to process the data collection: List<String> names = Arrays.asList("John", "Jane", "Mike"); List<String> modifiedNames = _.myFunction(names); This will use a custom function `_.myfunction` to modify each element in the` names` collection and return the modified set. Summarize: By integrating and expanding the Underscore framework, we can use its powerful function programming functions in the Java class library to operate and process data more efficiently.This article introduces how to integrate and expand the Underscore framework and provide the corresponding Java code example.Through these steps, you will be able to better use the Underscore framework to meet your programming needs.