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https://bbs.tsingfun.com/thread-1260-1-1.html 

IoT & MQTT中文平台: [url]https://iot.dfrobot.com.cn/[/url] befa云...

IoT & MQTT中文平台: https://iot.dfrobot.com.cn/ befa云 华为 阿里bemfa.comhttps://api.heclouds.com/devices
https://bbs.tsingfun.com/thread-1882-1-1.html 

cn.fun123.ClientSocketAI2Ext 中文网升级版 Socket客户端拓展,TCP通信拓...

最新版:https://www.fun123.cn/reference/ ... ctivity.html#Socket 已经加入发送二进制的接口。 原版: 报错后,App直接崩溃,没得选择,体验不好! AppInventor2中文网升级版: 连接出错后,使用对话框组件个性展示出错信...
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How to write LDAP query to test if user is member of a group?

...r here: (&(objectClass=user)(sAMAccountName=yourUserName) (memberof=CN=YourGroup,OU=Users,DC=YourDomain,DC=com)) and when you run that against your LDAP server, if you get a result, your user "yourUserName" is indeed a member of the group "CN=YourGroup,OU=Users,DC=YourDomain,DC=com Try and...
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How to find the kth largest element in an unsorted array of length n in O(n)?

...A2. Let's guess that T(n) <= an for some a. Then we get T(n) <= cn + (1/n) ∑i=1 to nT(max(i-1, n-i)) = cn + (1/n) ∑i=1 to floor(n/2) T(n-i) + (1/n) ∑i=floor(n/2)+1 to n T(i) <= cn + 2 (1/n) ∑i=floor(n/2) to n T(i) <= cn + 2 (1/n) ∑i=floor(n/2) to n ai and now somehow w...
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由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术

由12306.cn谈谈网站性能技术12306.cn网站挂了,被全国人民骂了。我这两天也在思考这个事,我想以这个事来粗略地和大家讨论一下网站性能的问题。因为仓促,而且完全基于...12306.cn网站挂了,被全国人民骂了。我这两天也在思考...
https://bbs.tsingfun.com/thread-3044-1-1.html 

App Inventor 2 字典 vs 列表:同样存数据,性能差了10倍? - App应用开发 ...

...资料</b><br><br>- 字典积木完整文档:<a href="https://www.fun123.cn/reference/blocks/dictionaries.html" target="_blank">https://www.fun123.cn/reference/blocks/dictionaries.html</a><br>- 列表积木文档:<a href="https://www.fun123.cn/reference/blocks/lists.html" target="_blank">https:/...
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How to create a self-signed certificate with OpenSSL

...ry Name", but you can just hit Enter and accept the defaults. Add -subj '/CN=localhost' to suppress questions about the contents of the certificate (replace localhost with your desired domain). Self-signed certificates are not validated with any third party unless you import them to the browsers p...
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Calculating moving average

...comment from @Ricardo Cruz: cx &lt;- c(0, cumsum(ifelse(is.na(x), 0, x))) cn &lt;- c(0, cumsum(ifelse(is.na(x), 0, 1))) rx &lt;- cx[(n+1):length(cx)] - cx[1:(length(cx) - n)] rn &lt;- cn[(n+1):length(cx)] - cn[1:(length(cx) - n)] rsum &lt;- rx / rn This still has the issue that if all the values ...
https://bbs.tsingfun.com/thread-3096-1-1.html 

Scratch还是App Inventor?低代码编程工具2026终极横评:谁才是真正的入门...

...化,作品分享平台成熟 App Inventor 2:中文社区(如fun123.cn)本土化完善 维度:进阶路径 Scratch:→ Python/JavaScript App Inventor 2:→ Python/Java/Kotlin 详细对比 场景1:给小学生做编程启蒙 如果你的孩子刚上小学,从来没...
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keytool error :java.io.IoException:Incorrect AVA format

...PatrickTaylor -validity 10000 -keystore C:\drops\patrickkeystore -dname "cn=Patrick Taylor, ou=engineering, o=company, c=US" share | improve this answer | follow ...