Programmer Think

Looking at the source code of mvc, we know that it executes the InvokeAction method in the Controller Action Invoker class to implement the filter and action method execution.   By looking at the source code, we know that he implemented the IActionFilter filter and action method by calling InvokeAction Method WithFilters, as shown in the ...

Introduce closures you understand? Anyway? I've heard it many times lately! It feels like I can't face those sharp questioning without a good summary!If you think closures are well understood, just skip to the end! 1. Closure concept Xiao Hongshu's interpretative closure is a function that has access to variables in the scope of another functio ...

1. Use JavaScript in HTML async: Load external script file, inform browser to download immediately and execute asynchronously defer: scripts can be delayed until the document is fully parsed and displayed noscript: The browser does not support scripts.Browsers support scripts, but scripts are disabled 2. Variables, scopes and memory problems Du ...

1. New Construction Select New Project - > Application - > Qt Widgets Application - > Choose in the Welcom interface Enter the project name Name, and select the project storage path, click Next. The next page continues to click Next (as the default project path, you decide not to check). Select Base class as Qwidget, enter Class name ...

Regular parsing (re module) Single character: ...: All characters except newlines []: [aoe] [a-w] matches any character in the set \ d: Number [0-9] \ D: Non-digital \ w: Numbers, letters, underscores, Chinese \ W: Nonw \ s: All blank character packages, including spaces, tabs, page breaks, an ...

This paper mainly introduces the message pop-up dialog box commonly used in PyQt interface implementation, the input box that provides user input, and the file dialog box that opens file to get file/directory path.Before learning about these three controls, think about the main scenarios they use: 1. Message pop-up dialog box.Programs that enc ...

Links to the original text: https://blog.csdn.net/qq_39455116/article/details/96480845 Articles Catalogue 3. MySQL 8.0 looks at the isolation level of default transactions and tests them 3.1 Change the isolation level to: Uncommitted Rea ...

NGINX lua integrated kafka Step 1: Enter the opresty directory [root@node03 openresty]# cd /export/servers/openresty/ [root@node03 openresty]# ll total 356 drwxr-xr-x 2 root root 4096 Jul 26 11:33 bin drwxrwxr-x 44 1000 1000 4096 Jul 26 11:31 build drwxrwxr-x 43 1000 1000 4096 Nov 13 2017 bundle -rwxrwxr-x 1 1000 1000 45908 Nov 13 20 ...

Polymorphism: Method Polymorphism Method overloading 2. Method overwriting Object polymorphism 3. Inheritance of abstract classes 4. Implementation of Interface Coupling: When the code changes, the client needs to adjust accordingly. Factory design pattern: 1. Simple Factory Mode (Defining a ...

Introduction to redis REmote DIctionary Server(Redis) is a key-value storage system written by Salvatore Sanfilippo.Redis is an open source, ANSI C-language, BSD-compliant, network-enabled, memory-based and persistent log, Key-Value database, and multilingual API.It is often referred to as a data structure server because values can be of typ ...