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App Inventor 2 列表选择器 用法示例 · App Inventor 2 中文网
...馈 我要反馈 var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?8d287b854d737bdc880e8ddeac1b309d"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertB...
Activity启动器（ActivityStarter）如何查看并启动其他App · App Inventor 2 中文网
...馈 我要反馈 var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?8d287b854d737bdc880e8ddeac1b309d"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertB...
App Inventor 2 AsciiConversion 拓展，ASCII编码与解码，Ascii码转换 · App Inventor 2 中文网
...换后得到的文本。
用法示例2：: with Bluetooth UART
UART_TX_Field：是包含接收到的字符的 Ascii 代码的列表。
如果 UART_TX_Field 是以下列表： [51,48] ，则最后一个块将在 label_Temperature 中写入文本：“30”。详见：test_AsciiConversion.aia
...
App Inventor 2 Clipboard 拓展：实现剪贴板的复制粘贴功能 · App Inventor 2 中文网
...lipboard 拓展由中文网开发及维护，最新版本 v1.0，基于 TaifunClipboard 拓展 开发。
.aix 拓展下载：
cn.fun123.Clipboard.aix
demo程序下载：
Clipboard.aia
使用方法
属性及方法很简单，默认操作成功后显示提示信息，SuppressToast设...
App Inventor 2 实现商业级APP启动屏幕效果(SplashScreen) · App Inventor 2 中文网
... 顶部 var qrcode = new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 MIT同步更新的中文本土化 在线App开...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...般用于安全性、可靠性要求高的场景，比如支付。
RetainFlag：保留消息
保留消息定义：如果PUBLISH消息的RETAIN标记位被设置为1，则称该消息为“保留消息”。
Broker对保留消息的处理：Broker会存储每个Topic的最后一...
AppInventor2 解析json数据技巧 - App应用开发 - 清泛IT社区，为创新赋能！
...;"data": [
{
"identifier": "CH4",
"time": 1762406563579,
"value": "6.9",
"data_type": "float",
...
Is there a way to check which CSS styles are being used or not used on a web page?
Want to know which CSS styles are currently being used on a web page.
7 Answers
7
...
Differences between distribute, distutils, setuptools and distutils2?
...s. It introduces the distutils Python package that can be imported in your setup.py script.
Official docs | distutils section of Python Package User Guide
setuptools was developed to overcome Distutils' limitations, and is not included in the standard library. It introduced a command-line utility...
IF… OR IF… in a windows batch file
...FINED as a final test - no need to use delayed expansion.
FOR ..... DO (
set "TRUE="
IF cond1 set TRUE=1
IF cond2 set TRUE=1
IF defined TRUE (
...
) else (
...
)
)
You could add the ELSE IF logic that arasmussen uses on the grounds that it might perform a wee bit faster if the 1...