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https://bbs.tsingfun.com/thread-2236-1-1.html 

计时器后台计时问题探究 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

...还是计时,后面时间久了就不计时了是吗?这个需要研究源码,调查一下
https://bbs.tsingfun.com/thread-2369-1-1.html 

标签的“具有外边距”有啥用? - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

...Dp = dpToPx(view, DEFAULT_LABEL_MARGIN);     } 复制代码根据源码,标签只有在特定的布局中才会有margin,否则就是0不生效。 ViewGroup.MarginLayoutParams 是 Android 布局系统中一个 用于描述视图外边距(margin) 的参数类。它继承自 ViewGro...
https://bbs.tsingfun.com/thread-2506-1-1.html 

AI伴侣现已正式升级为“AppInventor学院”App! - App Inventor 2 中文网 -...

...经申请完成,各开源项目我们会遵循其开源协议,售卖的源码必定是我们自己原创或合作有版权的,更不会去抄袭别人的作品、视频等。然后,MIT的Logo我们用了一段时间,可能你们也有所疑问是否构成侵权,关于MIT Logo的使用问...
https://www.tsingfun.com/it/cpp/1460.html 

控件重绘函数/消息OnPaint,OnDraw,OnDrawItem,DrawItem的区别 - C/C++ - 清...

...是OnPaint和Ondraw的关系,其实这个很简单,CView::OnPaint()的源码如下: void CView::OnPaint() { CPaintDC dc(this); OnPrepareDC(&dc); OnDraw(&dc) } 从代码中可以清楚的看出他们的关系。 OnPaint OnDraw OnDrawItem DrawItem ...
https://www.tsingfun.com/it/tech/1142.html 

Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...

...的保护的源文件及文件的复制,不可复制也是缺点。 2、源码是自己的,版权有保证。 缺点: 1、服务器上必须安装Office软件。 2、导出PDF文件本身是个打印过程,Excel页面格式未设置,会出现一张表格打印出多页来,阅读体...
https://stackoverflow.com/ques... 

Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception

... I don't think so, necessarily. IDisposable technically is meant to be used for things that have non-managed resources, but then the using directive is just a neat way of implementing a common pattern of try .. finally { dispose }. A purist would argue 'yes - it's...
https://stackoverflow.com/ques... 

Optimizing away a “while(1);” in C++0x

...sume we have the following loops, where count and count2 are global variables (or have had their address taken), and p is a local variable, whose address has not been taken: for (p = q; p != 0; p = p -> next) { ++count; } for (p = q; p != 0; p = p -> next) { ++count2; } Coul...
https://www.tsingfun.com/it/cpp/1229.html 

boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的,具体请参见boost文档 最后,给出一些文章中用到的源码没有的实现部分 #include <algorithm> #include <vector> #include "boost/lambda/lambda.hpp" #include "boost/function.hpp" Course::Course( unsigned int num, unsigned int hour, std::string name ) ...
https://www.tsingfun.com/it/tech/1390.html 

程序员之网络安全系列(三):数据加密之对称加密算法 - 更多技术 - 清泛网...

...8B4QCotyZkKf091WElCwG659QiVVw0= Decrypeted: I Love You, Li Li .NET 源码: using System; using System.Security.Cryptography; using System.IO; using System.Text; namespace AES { class MainClass { public static void Main (string[] args) { string password = "Don't beli...
https://www.tsingfun.com/it/cp... 

[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...****************** 1 2 3 4 5 1 2 3 4 0 1 2 3 0 0 1 2 0 0 0 1 0 0 0 0 源码 array_test.cpp std::array 欢迎访问github博客,与本站同步更新 来源:https://elloop.github.io/c++/2015-12-23/learning-using-stl-5-std-array