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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...
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：设置了按钮事件，当开锁按钮被点击后就通过主题发送数字1，反之发送数字0。
达到效果：手机APP端数据显示
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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...
...钮被点击后就通过主题发送数字1，反之发送数字0。
12.EasyIOT服务器端设置：设置了温度、湿度、光线强度、噪音、门锁5个主题。
实现效果：手机APP端数据显示
4.EasyIOT MQTT服务器端数据
连接、订阅、发布参考：
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App Inventor 2 鸿蒙先行版：AppInventor 从此支持全平台，不再安卓专属 - ...
大家好，这里是 App Inventor 2 中文网（fun123.cn）。
今天想和大家聊一个很多人关心、但我们一直比较谨慎的话题——App Inventor 2 的鸿蒙（HarmonyOS NEXT）版本。
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先说结论
鸿蒙先行版已...
拓展中有AndroidRuntime.jar和class.jar为啥有2份逻辑？ - App Inventor 2 ...
拓展中有AndroidRuntime.jar里面有混淆的源码，还有class.jar（里面是.dex也是拓展混淆更好的源码）为啥都要？
为啥两份都要：两条互不相通的加载路径
files/AndroidRuntime.jar（.class）
谁用: 打包 APK：buildserver
&nb...
ai2-app 技能：业内首个AI技能生成的App - App Inventor 2 中文网 - 清泛IT...
使用我们自研的 AppInventor 源码生成的AI Skill技能，生成的一款完整的App：
任意AI工具（比如豆包、千问），导入技能即可：
效果：
What's the difference between lists and tuples?
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20 Answers
20
Active
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Repeat each row of data.frame the number of times specified in a column
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Here's one solution:
df.expanded <- df[rep(row.names(df), df$freq), 1:2]
Result:
var1 var2
1 a d
2 b e
2.1 b e
3 c f
3.1 c f
3.2 c f
share
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im...
py2exe - generate single executable file
I thought I heard that py2exe was able to do this, but I never figured it out. Has anyone successfully done this? Can I see your setup.py file, and what command line options you used?
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Deleting lines from one file which are in another file
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grep -v -x -f f2 f1 should do the trick.
Explanation:
-v to select non-matching lines
-x to match whole lines only
-f f2 to get patterns from f2
One can instead use grep -F or fgrep to match fixed strings from f2 rather than patterns (...
Working with huge files in VIM
I tried opening a huge (~2GB) file in VIM but it choked. I don't actually need to edit the file, just jump around efficiently.
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