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App Inventor 2 IoT 参考文档 · App Inventor 2 中文网
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App Inventor 2 IoT 专题：经典蓝牙(SPP)，低功耗蓝牙(BLE)，WIFI，物联网，MQTT，ESP32，Ardruino等相关硬件控制方法。
中文文档
【BLE】App Inventor 2 低功耗蓝牙 BlueToothLE 拓展
【Microbit】App Inventor 2 Microbit 拓展 - 使...
MLKitLanguageId 拓展：离线语言识别 · App Inventor 2 中文网
...是什么语言
when 按钮_检测.Click() {
LangId1.IdentifyLanguage(文本输入框_输入.Text)
}
when LangId1.GotLanguage(languageTag, name) {
标签1.Text = join("这是", name, "（", languageTag, "）")
}
when LangId1.NoLanguageFound(text) {
标签1.Text = "认不出来，...
Git / Bower Errors: Exit Code # 128 & Failed connect
...t config --global --edit)? Just, you know, to make sure. And some more specific .gitconfig (per user, or per git project) could be overriding it.
– Rafael Eyng
Sep 9 '14 at 19:24
2...
Extract source code from .jar file
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The version in the techieme link works beautifully, thank you!
– DerStrom8
Jul 28 '15 at 15:59
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How can I convert a hex string to a byte array? [duplicate]
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public static byte[] StringToByteArrayFastest(string hex) {
if (hex.Length % 2 == 1)
throw new Exception("The binary key cannot have an odd number of digits");
byte[] arr = new byte[hex.Length >> 1];
for (int i = 0; i < hex.Length >> 1; ++i...
ASP.NET MVC ActionLink and post method
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If you're using ASP MVC3 you could use an Ajax.ActionLink(), that allows you to specify a HTTP Method which you could set to "POST".
share
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jQuery get selected option value (not the text, but the attribute 'value')
...lter is better then using :selected selector directly in the first query.
If inside a change handler, you could use simply this.value to get the selected option value. See demo for more options.
//ways to retrieve selected option and text outside handler
console.log('Selected option value ' +...
Sound alarm when code finishes
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thanks! do you happen to know if linux has one that will speak to you too?
– mtigger
May 15 '13 at 22:39
2
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PHP array: count or sizeof?
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I would use count() if they are the same, as in my experience it is more common, and therefore will cause less developers reading your code to say "sizeof(), what is that?" and having to consult the documentation.
I think it means sizeof() does...
游戏中的算法与计算思维 03：用洗牌理解随机与循环 · App Inventor 2 中文网
...鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e.clientY - offsetY) + 'px'; }; // 鼠标释放时停止拖动 document.onmouseup = function(...