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App Inventor 2 Web客户端（Web）详细用法示例 · App Inventor 2 中文网
...ventor 2 如何下载/保存网络图片？
设置好网络图片的url，然后执行Get方法即可，代码如下：
其中，特别要注意的是保存相应信息属性设置为真，这样才能将目标网络图片保存到本地设备：
指定相应文件名称属性...
Efficient way to return a std::vector in c++
...
72
You should return by value.
The standard has a specific feature to improve the efficiency of r...
App Inventor 2 怎么修改app图标？ · App Inventor 2 中文网
... 返回首页
设置图标
在默认屏幕Screen1的属性“图标”中修改，如图：
点击？，可以查看属性的帮助，“更多信息”可跳转中文文档页面：
镂空效果
可以使用透明背景的png图片作为图标...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...:42
Gili
72.2k7575 gold badges325325 silver badges598598 bronze badges
answered Jun 18 '09 at 7:00
Magnus Haga...
ButtonBar拓展：定制功能非常强大、效果非常酷炫的导航条拓展 - App Invent...
...加2个“ButtonBar”对象和2个“水平布局”，然后创建各自的view，添加各自的Tab即可：
引用: App Inventor 2 发表于 2024-04-11 10:18
界面上添加2个“ButtonBar”对象和2个“水平布局”，然后创建各自的view，添加各自的Tab即可：...
How to pass the -D System properties while testing on Eclipse?
...
BombeBombe
72.4k2020 gold badges115115 silver badges125125 bronze badges
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What is the http-header “X-XSS-Protection”?
...understood-x-xss-protection/
http://p42.us/ie8xss/Abusing_IE8s_XSS_Filters.pdf
https://www.slideshare.net/masatokinugawa/xxn-en
https://bugs.chromium.org/p/chromium/issues/detail?id=396544
https://bugs.chromium.org/p/chromium/issues/detail?id=498982
...
UILabel - Wordwrap text
...endall Helmstetter GelnerKendall Helmstetter Gelner
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Setting PayPal return URL and making it auto return?
...umentation for IPN is here: https://www.x.com/sites/default/files/ipnguide.pdf
Online Documentation for IPN: https://developer.paypal.com/docs/classic/ipn/gs_IPN/
The general procedure is that you pass a notify_url parameter with the request, and set up a page which handles and validates IPN notif...
How to add new item to hash
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72
If you want to add new items from another hash - use merge method:
hash = {:item1 => 1}
ano...