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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网

...创建应用程序来扫描附近的 BLE 设备并连接到它们,如图 11 所示。连接设备后,用户可以使用服务从传感器读取或写入数据,并且 该传感器支持的特性。 图 12 所示的一个应用示例能够使用电池电量服务和特性读取 BLE 设备的电...
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Why doesn't indexOf work on an array IE8?

... Craver 580k125125 gold badges12551255 silver badges11351135 bronze badges 2 ...
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How do you reinstall an app's dependencies using npm?

... Sam Pierce Lolla 11544 bronze badges answered Oct 12 '12 at 20:39 himanshuhimanshu 1,68111 gold...
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CSS background-image - What is the correct usage?

... Pang 8,1981717 gold badges7373 silver badges111111 bronze badges answered May 12 '09 at 8:36 Alex RozanskiAlex Rozanski 37...
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How do I sort a list of dictionaries by a value of the dictionary?

... Dave Lasley 4,94111 gold badge3030 silver badges3535 bronze badges answered Sep 16 '08 at 14:39 Mario FMario F ...
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In Python, how do I convert all of the items in a list to floats?

... | edited Jan 28 '18 at 0:11 Stephen Rauch 37.8k1515 gold badges6060 silver badges8585 bronze badges ans...
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npm can't find package.json

... lealceldeiro 11.9k33 gold badges3131 silver badges6363 bronze badges answered Jun 7 '16 at 19:22 Deepali AgarwalDe...
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Android SDK on a 64-bit linux machine

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pythonic way to do something N times without an index variable?

... 112 A slightly faster approach than looping on xrange(N) is: import itertools for _ in itertools...
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TCPClient TCP客户端扩展:连接TCP服务器进行文本消息通信 · App Inventor 2 中文网

...本 日期 修改内容 1.0 2020-11-23 初始版本 1.1 2020-12-02 添加 UrsAI2SharedTcpClient 变体 1.2 2021-01-09 修复断开连接时 Write/Writeln 的行为 1.3 2021-04-...