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通信连接组件 · App Inventor 2 中文网
...JSON文本(JSON文本)
解码给定的 JSON 编码值以生成相应的 AppInventor 值。
JSON 列表 [x, y, z] 解码为列表 (x y z)，具有键 A 和值 B 的 JSON 对象（表示为 {A:B}）解码为列表 (( A B))，即包含二元素列表(A B)的列表。
如果你希望返回...
WheelView 拓展：滚轮选择框扩展，滚轮日历选择框和旋转日历扩展 · App In...
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原作者：Still_Learning
原始网址：https://community.appinventor.mit.edu/t/free-wheel-calendar-spin-calendar-extension/142640
发布日期：2025年3月19日
文档最后更新：2025年11月20日
您的改进建议 联系方...
ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处...
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原作者：Kumaraswamy
原始网址：https://community.appinventor.mit.edu/t/free-image-convertor-extension-to-convert-image-format-jpg-png-webp-and-much-much-more/39349
发布日期：2021年8月17日
最新版本：3.9
许可协议：免费开源
文档最后更新：20...
HTML5 Canvas vs. SVG vs. div
What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
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Difference between Char.IsDigit() and Char.IsNumber() in C#
...d 2 and 3 ('²' and '³') and the glyphs that are fractions such as '¼', '½', and '¾'.
Note that there are quite a few characters that IsDigit() returns true for that are not in the ASCII range of 0x30 to 0x39, such as these Thai digit characters: '๐' '๑' '๒' '๓' '๔' '๕' '๖' '๗' ...
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
...cked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8"
Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.http=ALL-UNN...
Generating random whole numbers in JavaScript in a specific range?
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I realize this is about 2½ years later, but with the input 1 and 6 your function returns values 1,2,3,4 and 5, but never a 6, as it would if it was "inclusive".
– some
Feb 2 '12 at 22:45
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PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value [D:\A...
报错如下：PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value [D:\APPinventor\AppInventor2\resources\app.asar.unpacked\Emulator\from-Android-SDK]!
App Inventor 2 扩展 · App Inventor 2 中文网
...: MIT App Inventor Extension
source code for sample extensions at: http://appinventor.mit.edu/extensions
Appinventor help: https://community.appinventor.mit.edu/
Note: App Inventor extensions are supported only on Android devices running API Level 8 (Android system 2.2 Froyo) and above. This ap...
What is self-documenting code and can it replace well documented code? [closed]
...is being done:
/* compute displacement with Newton's equation x = vₒt + ½at² */
const float gravitationalForce = 9.81;
float timeInSeconds = 5;
float displacement = (1 / 2) * gravitationalForce * (timeInSeconds ^ 2);
And the final version of code as documentation with zero comments needed:
f...