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QRCodeGenerator 拓展：根据给定的文本生成二维码 · App Inventor 2 中文网
...
也有采用 html + js + Web浏览器 生成二维码的方案：https://puravidaapps.com/qr.php
aix拓展下载
cn.fun123.QRCodeGenerator.aix
demo下载
TestQRCodeGenerator.aia
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ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
...。
原作者：Urs Köppern（Ullis Roboterseite）
原始网址：https://ullisroboterseite.de/android-AI2-ComponentGroup-en.html
您的改进建议 联系方式： 不需要回复的可留空~ 意见反馈（300字以内）： ...
How to access class constants in Twig?
...ated extension that solves problem better. It's published as open source.
https://github.com/dpolac/twig-const
It defines new Twig operator # which let you access the class constant through any object of that class.
Use it like that:
{% if entity.type == entity#TYPE_PERSON %}
...
Installing PG gem on OS X - failure to build native extension
.../Versions/9.3/bin/pg_config
This answer finally helped me figure it out: https://stackoverflow.com/a/9235107/3546680
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Where can I find “make” program for Mac OS X Lion?
...nger provides command line tools in the Preferences section. You now go to https://developer.apple.com/downloads/index.action, and select the command line tools version for your OS X release. The installer puts them in /usr/bin.
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PHP cURL HTTP CODE return 0
...00), you'll get the actual http code, in my case a 200 (as expected).
See https://www.php.net/manual/en/function.curl-setopt.php
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Version of SQLite used in Android?
...ite version only works on emulators and on devices with sqlite3 available: https://stackoverflow.com/a/3645800/444761
For other devices, see Juri's answer.
I have added an Issue #58909 to the Android Issue Tracker. Please star this if you would like to support it.
Note: if you want your app to use t...
JavaScript: Get image dimensions
...rl;
}
Use the above simply as: getMeta( "http://example.com/img.jpg" );
https://developer.mozilla.org/en/docs/Web/API/HTMLImageElement
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Split string on the first white space occurrence
...te that arr[2] will be empty, but you can just ignore it.
For reference:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split#Capturing_parentheses
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Use Fieldset Legend with bootstrap
...t;
}
.panel-body {
padding-top: 30px !important;
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
<div class="panel panel-primary">
<div class="panel-body">
<h3 class="...