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红外实验 - 把手机变成家电遥控器 · App Inventor 2 中文网
...做一个可自定义的遥控器
家里没红外的手机，可以用 ESP32 + WiFi 做红外转发器，
手机通过 UDP 发指令给它，再由它发红外
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App Inventor 2 参考文档 · App Inventor 2 中文网
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蓝牙 SPP/BLE、WiFi、MQTT、ESP32、Arduino 等硬件开发
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Get everything after the dash in a string in javascript
...that substr() might not be supported on earlier versions of some browsers (esp. Netscape/Opera).
Your post indicates that you already know how to do it using substring() and indexOf(), so I'm not posting a code sample.
shar...
How can you strip non-ASCII characters from a string? (in C#)
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answered Sep 25 '08 at 19:32
bzlmbzlm
9,00244 gold badges5757 silver badges8585 bronze badges
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Get a random item from a JavaScript array [duplicate]
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– XåpplI'-I0llwlg'I -
Dec 4 '15 at 11:32
4
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App Inventor 2 高频定时器教程 - 实现10ms级精确定时 · App Inventor 2 中文网
...保证10ms精度。替代方案：
嵌入式设备采集：用Arduino/ESP32采集，App只接收显示
原生Android开发：使用Android的HandlerThread或ScheduledExecutorService
降低需求：50ms间隔对于大多数应用已经够用（20Hz）
常见问题
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Count all occurrences of a string in lots of files with grep
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nice to see an approach not using grep, esp as my grep (on windows) doesn't support the -o option.
– David Roussel
Mar 12 '13 at 15:14
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Selecting all text in HTML text input when clicked
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Yeah, it's my favourite way to do this kind of task, esp. as it works for contenteditable elements as well. I think you can also make it even slightly more elegant, i.e. <input type="text" onfocus="document.execCommand('selectall')"> - pretty sure you can remove the null ...
How to launch Safari and open URL from iOS app
...l to Swift developers, it's a new language without a lot of documentation, esp. on solving real world iOS problems. In my case, autocomplete had chosen the "fileURLWithPath:" selector and I didn't realize that was why my URL was not opening, it was only by reading Dustin's answer that I saw that I s...
How to compare two revisions in Bitbucket?
...ences.
– Damodar Bashyal
Jul 9 at 3:32
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