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VIP会员中心 · App Inventor 2 中文网,少儿编程陪伴者

... 首页 VIP会员中心 中文社区 关于 App Inventor 2 中文网 ...
https://bbs.tsingfun.com/thread-1786-1-1.html 

【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区,为创新赋能!

在行空板《家庭安全相册》项目中,第四部分是手机APP监护人部分。这部分需要完成手机获取家庭成员传送回来的位置后,计算是否在安全的电子围栏范围内。因为电子围栏是相对复杂的部分,因此独立一章详细说明。 App In...
https://bbs.tsingfun.com/thread-1442-1-1.html 

【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...

...使人们更容易理解。帮助人们一眼就能看到他们在生活或社区中关心的问题发生了什么。你喜欢用哪些不同方式的图像和图形来理解数据?所有的数据都留在App中,直到你按下Reset按钮。在本系列中,你可以查看以下指南,了解如...
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'const int' vs. 'int const' as function parameters in C++ and C

...y declarations in a spiral pattern. Others were so frustrated by them they invented Go. – Martin J.H. May 20 '14 at 14:14 ...
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How can I check if an element exists in the visible DOM?

...refox until version 9, I'm guessing because it was a non-standard function invented in IE that wasn't standardized until later) - it must be the fastest because it uses a single call to a native API – Jon z Mar 26 '15 at 15:00 ...
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Why are hexadecimal numbers prefixed with 0x?

... Wouldn't they have both been invented at the same time? Why would there ever be one but not the other? – AshleysBrain Apr 22 '10 at 13:28 ...
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How to add parameters to HttpURLConnection using POST using NameValuePair

... this should be an answer, as no re-inventing of the wheel must be done! – injecteer Nov 26 '15 at 15:07 1 ...
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C++: const reference, before vs after type-specifier

...s the explanation from the man who wrote it. To quote him: Why? When I invented "const" (initially named "readonly" and had a corresponding "writeonly"), I allowed it to go before or after the type because I could do so without ambiguity. ...
https://www.tsingfun.com/ilife/tech/562.html 

谁在争抢UGC - 资讯 - 清泛网 - 专注C/C++及内核技术

...并重。YouTube、MySpace等网站都可以看做是UGC的成功案例,社区网络、视频分享、博客和播客(视频分享)等都是UGC的主要应用形式。 UGC正在成为互联网领域被十分看好的新的应用和商业模式,甚至形成了一种新的媒体形式,其潜在...
https://www.tsingfun.com/ilife/tech/323.html 

无社交不商业,Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术

...一个打车软件。他只是以专车切入,去构建并经营强大的社区。并把社区当作强大的市场力量,反向去支配和影响上游的供应链。 而百度、阿里、腾讯(bat),目前垄断中国互联网的三家公司,届时很可能被边缘化,如同传统...