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https://bbs.tsingfun.com/thread-2759-1-1.html 

急求技术支持,不知如何将WxBit版APP Inventor的MQTT客户端转化为App Inven...

...主题topic全局变量。 手机APP代码块描述:设置了当MQTT连接建立之后订阅相关主题和连接断开后给出提示。 手机APP代码块描述:设置了当手机MQTT客户端收到消息后将消息内容显示在APP的界面上。 手机APP代码块描述:设...
https://www.tsingfun.com/it/tech/1472.html 

LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...题的简易工具。LINGO内置了一种建立最优化模型的语言,可以简便地表达大规模问题,利用LIN... LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立最优化模型的语言,可以简便地表达大规模问题,利用LINGO...
https://www.tsingfun.com/it/os_kernel/1290.html 

Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...录、文件的信息,只需要关注如何更新同步目录与文件就可以了。由于Dokan是多线程的,因此实现时需要做到线程安全;查看Dokan使用的结构类型,发现只有两个成员可以使用,即DOKAN_OPTIONS里的GlobalContext和DOKAN_FILE_INFO里的Context...
https://bbs.tsingfun.com/thread-2930-1-1.html 

【HarmonyOS】真机测试ble - HarmonyOS NEXT - 清泛IT社区,为创新赋能!

[2:01:15 PM] YAIL[254]: (begin (require <com.google.youngandroid.runtime>) (process-repl-input "P:)R:yv~... [2:01:15 PM] → SimpleYail 执行 [2:01:15 PM] [YAIL] 解析 YAIL (244 chars) [2:01:15 PM] [YAIL] 解析得到 1 个顶层表达式 [2:01:15 PM] [YAIL] 执行[0]: (be...
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What is the best Battleship AI?

... Here is my entry! (The most naive solution possible) "Random 1.1" namespace Battleship { using System; using System.Collections.ObjectModel; using System.Drawing; public class RandomOpponent : IBattleshipOpponent { public s...
https://ullisroboterseite.de/a... 

AI2 Keep Awake

...r the CPU to be constantly active. Instead, an alarm can be used (see UrsAI2Alarm ). Motivation For some projects it is necessary to prevent the associated app from being deactivated by the operating system. A typical example would be that sensor data should be sent regularly to an MQTT bro...
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Why do we check up to the square root of a prime number to determine if it is prime?

...es this might be useful, but this all heavily depends on implementation details (programming language, hardware, data types, libraries), none of which are known in this general consideration. – Sven Marnach Aug 3 at 9:38 ...
https://www.tsingfun.com/it/tech/711.html 

Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...exec_log mysql相关:tail -f /usr/local/mysql/data/linux.linux.com.err 测试amavisd:amavisd -d config debug-sa 测试spam:spamassassin -D --lint 测试maildrop:maildrop -V 10 -dtest@test.com Postfix 维护 队列
https://bbs.tsingfun.com/thread-2743-1-1.html 

手电筒扩展插件大家用起来没? - App应用开发 - 清泛IT社区,为创新赋能!

我用小米15测试老是报错(setParameters failed)不成功,不知大家是否和我一样?你好,经测试之前的拓展在现在较新版本的安卓手机上已经失效,我们新改了一个版本2.0,已经适配了新版本Android手机,已经测试通过。 下载地址...
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How to change the CHARACTER SET (and COLLATION) throughout a database?

...TER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci; change table collation: ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci; change column collation: ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACT...