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App Inventor 2 OCR 自研拓展：离线图片文字识别（Tesseract 5） · App Inventor 2 中文网
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.aix 最新拓展下载：
cn.fun123.OCR.aix - v2.0
内置简体中文 chi_sim 轻量模型，安装后即可离线识别
注：本拓展包含原生库（.so），联机调试需 2026-07 之后的新版 AI 伴侣；打包 APK 不受影响，详见 常...
How to get the day of week and the month of the year?
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answered Jan 27 '11 at 22:50
user113716user113716
291k5959 gold badges425425 silver badges431431 bronze badges
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Get mouse wheel events in jQuery?
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JasCav
33.2k1919 gold badges101101 silver badges159159 bronze badges
answered Nov 18 '11 at 22:19
Darin DimitrovDarin Dimitrov
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How to Validate a DateTime in C#?
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270
DateTime.TryParse
This I believe is faster and it means you dont have to use ugly try/catches ...
使用Activity启动器组件 · App Inventor 2 中文网
...n
使用预先指定的消息启动邮件程序
2020 年 1 月 26 日：此示例已更新以适应 android 中的更改。 此处显示的电子邮件发送代码将在下一个应用程序发明者版本中运行，但尚未运行。
要启动 Android 邮件程序应用...
Getting a list of associative array keys
...Object.keys(obj)
Example:
var dictionary = {
"cats": [1, 2, 37, 38, 40, 32, 33, 35, 39, 36],
"dogs": [4, 5, 6, 3, 2]
};
// Get the keys
var keys = Object.keys(dictionary);
console.log(keys);
See reference below for browser support. It is supported in Firefox 4.20, Chrome 5, and Inter...
App Inventor 2 NFC应用教程 - 读取NFC标签与门禁卡 · App Inventor 2 中文网
...格式：
when NFC1.NdefMessageRead(recordList) {
var i = 1
while i 0 {
var name = selectListItem(global_authorizedNames, index)
Label1.Text = join("✅ 欢迎回来，", name)
Label1.TextColor = True // standard blocks color simplification
// 触发开门动作（通过蓝牙/...
App Inventor 2 FTP 客户端拓展：FTP协议连接、上传、下载、创建、修改目录...
...系方式： 不需要回复的可留空~ 意见反馈（300字以内）： 给个鼓励也行呐~o~ 提供截图（仅截取当前可视区域） delete edit 高亮或隐藏信息 ...
Using Java 8's Optional with Stream::flatMap
...latMap(Optional::stream)
.findFirst();
Java 8
Yes, this was a small hole in the API, in that it's somewhat inconvenient to turn an Optional<T> into a zero-or-one length Stream<T>. You could do this:
Optional<Other> result =
things.stream()
.map(this::resolv...
Can pandas automatically recognize dates?
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answered Jul 4 '13 at 10:32
Rutger KassiesRutger Kassies
41.9k1111 gold badges9090 silver badges9090 bronze badges
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