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previously on Guide to functional programming in Scala Scala functional programming (2) introduction to scala basic syntax scala functional programming (3) scala sets and functions Scala functional programming (four) functional data structure 1.List code analysis The content introduced today is mainly to supplement the scala functional data st ...

Timer Programming Sharing Timer Program Design Sharing 1. Background The timer program referred to in this paper is not a narrow timer program, but a general way to achieve certain business scenarios through the timer trigger program, combined with the database. 2. Scheme Analysis 3.1 Scene 1 3.1.1 Requirements We need to push comp ...

Hello, this article will introduce the use and implementation of Symfony's EventDispatcher component through examples from my actual development work. This component is very useful in the actual development process. It can make the business logic of the code very clear, increase the reusability of the code, and greatly reduce the code coupling ...

1. What is AOP Aspect-oriented programming (AOP), also translated as Aspect-oriented programming and Profile-oriented programming, is a program design idea in computer science. It aims to further separate cross-cutting concerns from business entities to improve the modularity of program code.By adding an additional Advice mechanism to the exis ...

Pay This document is v2.x version, if you want to find v1.x version document, Click https://github.com/yansongda/pay/tree/v1.x Note: v1.x is incompatible with v2.x version After developing Alipay and WeChat Payments several times, it is natural to have a feeling of disgust and inertia. I want to find the wheel related on the internet, but I ...

Topics and use cases package pid053; /*Maximum suborder sum Given an integer array nums, find a continuous subarray with the largest sum (subarray contains at least one element), and return its maximum sum. Example: Input: [- 2,1, - 3,4, - 1,2,1, - 5,4], Output: 6 Explanation: the sum of continuous subarrays [4, - 1,2,1] is ...

I. concept of progress bar The progress bar is the real-time display of the processing speed, completion, the size of the remaining unfinished tasks and the time that may need to be processed in the form of pictures when the computer is processing the tasks, generally in the form of rectangular bars. Several elements of progr ...

Preface This article will simply integrate Redis based on springboot 2.1.8.RELEASE, which is suitable for beginners Introduction to Spring Boot integrated Redis 1. Introduce redis dependency in pom.xml <!-- Redis rely on --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-s ...

I. origin Historically, Linux startup Always used init Process. The following command is used to start the service. $ sudo /etc/init.d/apache2 start # perhaps $ service apache2 start This method has two disadvantages. First, it takes a long time to start. init process is started serially. The next process will be started only afte ...

Note: this tutorial patches, activation code collection and network, if there is infringement, please contact the author to delete! On November 28, 2019, JetBrains released Go's strongest editor, GoLand, March 2019. This update software consumes less CPU and faster performance, enhances support for Go Modules, adds a new set of quick fixes, and ...