Programmer Group

Lamda expression λ It is the eleventh letter in the Greek alphabet, and its English name is Lambda.Why use lambda expressions: 1. Avoid too many anonymous inner class definitions. 2. It can make your code look very concise. 3. Remove a pile of meaningless code, leaving only the core logic.lambda expressions are essentially functiona ...

catalogue VUE Foundation MVVM design VUE binding principle design Virtual DOM tree analysis VUE programming steps and Practice Binding and instruction application Binding style analysis (understand): Application of life cycle function Ajax requests in Axios mode Get request Post request VUE component development Component design B ...

First release the whole game source code, followed by the corresponding description, and the output result is at the end 1, Project 1.game.h about game related function declarations, symbol declarations and header files #Include < stdio. H > / / include header file #Include < stdlib. H > / / include of rand function header file # ...

1. Definition For some reason, an object needs to be provided with a proxy to control access to the object. At this time, the access object is not suitable or can not directly reference the target object. The proxy object acts as an intermediary between the access object and the target object. 2. UML class diagram Abstract Subject: declar ...

preface      prometheus is now a mainstream monitoring software. With the popularity of containers, prometheus is more and more widely used. I also have articles about prometheus earlier. However, unlike the traditional zabbix monitoring, prometheus web UI does not have login authentication, and sometimes it seems insecure. ...

catalogue1. Installing Java environment in Linux system(1) Unzip the Java installation package(2) Configuring Java environment variables(3) Verify that the Java environment is configured successfully2. Installing JMeter on Linux system(1) Download JMeter(2) Transfer JMeter installation package to Linux system(3) Unzip the JMeter installation pa ...

Template EK #include<iostream> #include<cstdio> #include<cstring> #include<queue> using namespace std; inline int read() { int x=0,f=1; char ch=getchar(); while(ch<'0'||ch>'9'){ if(ch=='-') f=-1;ch=getchar(); } while(ch>='0'&&ch<='9'){ x=(x<<1)+(x<<3)+(ch^48);ch=getchar(); } ret ...

preface:         In the process of specifically interpreting the functional principles of the core classes of JobTriggerPoolHelper, please familiarize yourself with the basic principles of ThreadPoolExecutor, volatile, ConcurrentMap, AtomicInteger, etc. at the same time, please consider the problems of JobTriggerPoolHelper ...

Constant symbolization:   Use symbols instead of specific numbers to represent numbers in programsconst int a=12;               const fixes a to a value of 12 Enumeration: Enumeration is a user-defined data type that is declared with the keyword enum in the following syntax:enum enumeration type name {nam ...

catalogue 1. Meter lock   2. Row lock   two point one   Read uncommitted 2.1.1 analog dirty reading 2.2 read submitted 2.2.1 test dirty reading problem   2.2.2 non repeatable reading   2.2.3 repeatable   2.2.4 mvcc (to be supplemented) 2.2.5 unreal reading   2.2.6 serialization (to be supplemented) ...