1. Singleton mode
1. Definition
As the object creation mode, singleton The pattern ensures that there is only one instance of a certain class, and it is self-instantiated and provides t
1. Singleton mode
1. Definition
As the object creation mode, singleton The pattern ensures that there is only one instance of a certain class, and it is self-instantiated and provides t
We know the influence of SingleTask mode on Activity is as follows:
For example, if we set Activity A to SingleTask mode, and other Acitivity to Standard mode, there are the following effects
I am trying to use a single event handler for several controls in an ASP.NET web page. I want to add an event handler at runtime, if and only if it does not exist. In In C#, I would write as follow
I used Lua to split the following strings into tables:
(The data are aligned with each other. I did not find how to write the formatted data on this website)
IP: 192.168.128.12
MAC: AF:3G:9
I am trying to use simple pattern matching to parse the chemical formula in Lua. However, I don’t know how to specify the capture group as optional. This is the pattern I came up with: < /p>
As we all know, regular expressions implemented in a recursive manner (rather than NFA/DFA) may require exponential running time in some cases. Lua patterns are implemented through recursive matche
Architecture pattern: API combination Context You have applied the microservice architecture pattern and the per-service database pattern. Therefore, realizing queries that connect data from multip
Microservice pattern language The following summarizes the pattern language of microservice architecture
Which one should you choose for your application Architecture?
How to decompose
1. OCP–open close principle is the The cornerstone of “reuse design”. The “open” in the opening and closing principle means that the expansion of the component function is open. When the de
Implementing distributed locks based on annotations There are two implementations of distributed locks: 1. Based on redis 2. Based on zookeeper
For convenience The use of distributed locks is