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EMQX configuration I use Windows, so I configure the Windows version. Download on the official website first emqx Installation is simple 1. Select the Windows version through emqx.io or github and download the.zip package to be installed. 2 decompression package 3 Open Windows command line w ...

Learning Notes of JavaScript Design Patterns and Development PracticeDesign Patterns - Implementing Singleton Patterns with JavaScript Explain Definition: Ensure that a class has only one instance and provide a global access point to access it.Use scenarios: global caching, Windows objects, login floating windows, etc.Key: Use a variable to in ...

Solution of using matplotlib to lose Chinese font in linux When you call matplotlib in linux, if you have Chinese in label, you need to specify the font through the following statement: import matplotlib.pyplot as plt plt.rcParams['font.sans-serif']=['SimHei'] At this time, it may fail to display be ...

Links to the original text: https://www.cnblogs.com/lxy0/p/11413976.html Analyse the Web Site to Find the Need Web Site Use browser browser to press F12 to open developer tools, and then open the page of the fight fish classification page. ...

1 Topic Description Given an array and the size of the sliding window, find the maximum value in all sliding windows. For example, if the input array {2,3,4,2,6,2,5,1} and the size of the sliding window are 3, then there are six sliding windows, their maximum values are {4,4,6,6,5}; for the array {2,3,4,2,6,2,5,1}, there are sliding windows. ...

Basic use of matplotlib Initial knowledge of matplotlib Basic usage of matplotlib figure image of matplotlib matplotlib sets coordinate axis 1 matplotlib sets coordinate axis 2 matplotlib sets legend Legend Legends matplotlib sets annotation annotation annotation Scatter scatter plot bar histogram co ...

In an awkward situation, SSMS's GridView support for large fields (varchar(max), text, etc.) is not very friendly.Characters beyond 8000 lengths, SSMS tables are not visible (of course, not visible), nor can they be directly exported (more than 8000 characters outside).This kind of problem is intolerable when others come to ask for help. So we ...

Multithreading Multithreading technology is used to design three methods, one is to use counter module QTimer, the other is to use multithreading module QThread, and the other is to use event processing function. QTimer If you want to perform an operation periodically in the application summary, such ...

intent introduction So how on earth do we jump from one window to another, and how does information from one window pass to another? Yes, through intent. Let's briefly introduce intent. There are two ways to use Intent in Android: explicit Intent and implicit Intent. //Explicit intent (this code ...

Links to the original text: https://my.oschina.net/u/160145/blog/264399 Some people haven't written HelloWorld for three months; some people don't know what the compiler is; some peopl ...