Programmer Group

Author: Wang Jishun Baozun e-commerce DBA is mainly responsible for the design and development of database monitoring alarm and automation platform, and is good at database performance optimization and fault diagnosis. background As the number of servers in each environment of the company increases, there are multiple Prometheus clusters dep ...

iOS remote notification trigger I. system under iOS 10 It is a method. There is no way to distinguish the specific situation of receiving notification and clicking notification. You can use UIApplicationStateBackground to judge the situation of the front and back office // This method will be invoked even if the application was launched or res ...

Promise is an application framework that deals with a series of asynchronous operations. It can ensure that a series of asynchronous operations can be executed in sequence. When an error occurs, it can be handled by catch ing the error. Promise framework is also a good interpretation of swift's face-to-face protocol programming and functional p ...

The OC version of SDWebimage that I read before is mature due to the development trend of Swift. It's also time to practice (think of Andy Lau's practice), think, read and write while flying in the world. At first, I plan to read it from the beginning, but the Kingfisher version is limited to upgrading with the Swift version, so if you want to ...

Today's X Github: https://github.com/shuiRong/T... (today's X) This is a boring App written by FlutterRecommend a different one every day: picture, poem, famous saying, music, music review, advanced mathematics, two kinds of color matching, chemical equation, Github Repo, Zhihu problem. (P.S. except that the picture is from Bing homepage, only ...

1. The attribute operations in the tree are: 1, the number of nodes in the tree, the height in the tree, and the degree of the tree;        2. Number of nodes in the tree: 1, define function: count(node) 1. Count the number of nodes in the tree with node as the root node; 2, recursive implementation; 2. Function code implementation: ...

The installation process is basically the same as that of the source version. In addition to the compilation phase, this article only talks about the release version, that is, the version with bin file Benefit: each user can install their own MySQL Server Target host system: CentOS 6.8 User: saojie (without administrator rights) Directory: / ho ...

Swift elegant protocol extension Call form of imitating view.snp.xxx How to achieve The complete core code is as follows: Call form of imitating view.snp.xxx First look at the call effect: "123456". yy_Str.MD5ForLower32Bate() "123456".yy_Str.MD5ForLower32Bate() //Similar: view.snp.xxx ...

There are very powerful Retrofit requests in Android development, and it is very convenient to implement RESTful API network requests with RxJava. There are also very powerful network request libraries in iOS development Moya Moya is a lightweight Swift network layer based on Alamoire. Moya's scalability is very strong, and it can be easily com ...

RxJava has become one of the most important components of Android development. Recently, iOS applications have been developed using Swift. Consider using RxSwift in architecture design. Add dependency # Podfile use_frameworks! target 'YOUR_TARGET_NAME' do pod 'RxSwift', '~> 5' pod 'RxCocoa', '~> 5' pod 'RxBlocking', '~> 5' ...