Programmer Group

background Hooks has been very popular since it was launched. It has changed the way we write React code and helped us write more concise code. Today's article is not about Hooks. Besides Hooks, there are many practical skills that can help us write concise and clear code. Today, I've sorted out a few skills, some of which are also my practice ...

The topics are as follows: Read in a positive integer n, calculate the sum of its digits, and write each digit of the sum in Chinese pinyin. Input format: Each test input contains one test case, that is, it gives the value of natural number n. It is guaranteed that n is less than 10 100. Output format: For each digit of th ...

I. briefly Have you ever thought about how annotations like @ RequestParam and @ RequestBody work? Why can form forms and application/json parameters be directly encapsulated in Bean objects? This is about HandlerMethodArgumentResolver - Method Parameter resolver, which has two methods: public interface HandlerMethodArgumentResolver { bool ...

Writing a k8s operator defaultvm in kubebuilder mainly strings up the creation of ovn network and virtual machine to provide default available virtual machine for users. Kubebuilder is a framework for building the Kubernetes API based on CRD, which can be used to build APIs, Controller s, and Admission Webhook s. The code calls virtualmachine d ...

Time limit: 1000ms space limit: 131072K There is a wine table game called "knock 7". The rule is to start from one person and say any number. Other people will report back in sequence. If a number contains 77, or multiple of 77, then you need to knock the cup or plate, but you can't say it. Now nn people are sitting ...

1. Preface The importance of unified exception handling for application is self-evident. Today, let's talk about how Spring can handle unified Rest exception handling. At the same time, we will simply compare their advantages and disadvantages. 2. @Controller Combine @ ExceptionHandler Declare a method in the controller and mark it with the @ ...

Introduction to SCCA SCCA is called spring-cloud-config-admin, and Spring Boot applications (including Spring Cloud) are unified configuration management platforms under micro services. Github address: spring-cloud-config-admin Core Contributors: Programmer DD | stone-jin Tags: lightweight, easy to use, visually good, interactive Deploy ...

Need to make a check-in calendar, first simply make the effect of the calendar, directly share the source code, if you need to use it directly <template> <div> <!-- Calendar head --> <div class="calenderTitle"> <div class="calenderItem" v-for="item of calenderTitel">{{item}}</div> </di ...

1 Preface In the current mode of front-end and back-end separated development, the front-end invokes the API provided by the back-end to realize data display or related data operations, so as to ensure timely update and complete REST API documents, which will greatly improve the work efficiency of both sides and reduce unnecessary communicatio ...

introduce In this article, we will deal with the transformations that need to be done between the internal entities of Spring applications and DTO s (data transfer objects) outside the client. Model mapping Let's start by introducing the main library of entity to DTO transformation for execution - ModelMapper. We need to add the following depen ...