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iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...直接在介绍AFNetworking的时候详解吧。
25.使用NSURLConnection下载数据
1. 创建对象
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];
[NSURLConnection connectionWithRequest:request delegate:self];
2. NSURLCon...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...int类型在内存中所占字节数）。为了知道static_cast<> 实际如何，我们不得不要来看一下CDerived的内存布局。
CDerived的内存布局（Memory Layout）
如图所示，CDerived的内存布局包括两个对象，CBaseX 和 CBaseY，编译器也知道这一点...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...显然匹配前两个词都不如直接匹配英超来得准确，系统该如何体现出关键词的这种“重要性”呢？这时我们便可以引入词权的概念。在大量的语料库中通过计算（比如典型的TF-IDF算法），我们可以算出新闻中每一个关键词的权重...
What is the best way to do a substring in a batch file?
... - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...ng sizes as percentages
Fixed vs. responsive sizing
Detailed example
Special circumstances
Limitation: Drawing and animation
Responsive design and Google Play
One tricky issue in designing apps is making apps that look good on devices with scree...
Regular expression for first and last name
...
Your regex fail on 2 characters string. I think this fixed it ^[\w'\-,.]*[^_!¡?÷?¿\/\\+=@#$%ˆ&*(){}|~<>;:[\]]*$
– TKA
Aug 8 '19 at 19:23
...
Data structure for loaded dice?
..., r and s, between 0 and 1. Let i = floor(r*N)+1. If qi < s then return ai else return bi. The work in the alias method is in figuring out how to produce qk, ak and bk.
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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...困难的工作。我已经有5年 Linux 管理员的工作经历，知道如何监控系统使其保持正常运行。为此，我们编写了对于 Linux/Unix 系统管理员非常有用的并且最常用的20个命令行系统监视工具。这些命令可以在所有版本的 Linux 下使用去...
Can a Windows batch file determine its own file name?
... - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
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BAT的解决之道：得民心者得天下
而移动支付玩家又是如何做的呢？很显然BAT三家都意识到了这一问题，在解决方案上却各有千秋。
支付宝：补贴和导流依旧是拿手戏
先从支付宝来讲，得益于在电商时代积累的庞大用户体系...