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App Inventor 2 物联网入门的两个方向：BLE直连硬件 vs MQTT云端通信，你的...
...。配合App Inventor的Clock组件定时重连，基本能做到全天候在线。
结论：跨地域、需要远程访问 → 必须上MQTT。
场景3：穿戴设备交互
做一个智能手环原型，手机读取心跳步数。
BLE方案：这是BLE的"主场"。低功耗...
How to specify a port number in SQL Server connection string?
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Use a comma to specify a port number with SQL Server:
mycomputer.test.xxx.com,1234
It's not necessary to specify an instance name when specifying the port.
Lots more examples at http://www.connectionstrings.com/. It's saved me a few times.
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App Inventor 2 FTP 客户端拓展：FTP协议连接、上传、下载、创建、修改目录...
... no-repeat; } 文档反馈 切换 目录 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { ...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...-bottom: 0 !important; } 我要 反馈 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { ...
gitignore all files of extension in directory
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what's the difference between xxx/** and xxx/?
– thuzhf
May 24 '16 at 11:53
10
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How to fix the “java.security.cert.CertificateException: No subject alternative names present” error
...performed against what the client requests.
When your client uses https://xxx.xxx.xxx.xxx/something (where xxx.xxx.xxx.xxx is an IP address), the certificate identity is checked against this IP address (in theory, only using an IP SAN extension).
If your certificate has no IP SAN, but DNS SANs (or...
Detach many subdirectories into a new, separate Git repository
...--ignore-unmatch -- . && git reset -q $GIT_COMMIT -- apps/AAA libs/XXX' --prune-empty -- --all
As mentioned by void.pointer in his/her comment, this will remove everything except apps/AAA and libs/XXX from current repository.
Prune empty merge commits
This leaves behind lots of empty mer...
npm not working - “read ECONNRESET”
...This may be irritating, But It worked for me:
npm config set proxy http://xxx.xxx.xxx.4:8080
npm config set https-proxy http://xxx.xxx.xxx.4:8080
and
npm config rm proxy
npm config rm https-proxy
share
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【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
...本系列中，你可以查看以下指南，了解如何将数据发送到在线电子表格以便与群组共享。先决条件：能够自如的进行 App Inventor 组件设计和逻辑设计。如果你使用的是手机或平板，你需要一个最新版本的App Inventor伴侣（安卓设备A...
How do I resolve configuration errors with Nant 0.91?
After downloading Nant 0.91, I'm getting some rather cryptic configuration errors relating to configuration or security (see below).
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