Weak Reference – 第 4 页 – System.WeakReference<T>

2016-04-202016-04-21

Code Hunt

开始的结束与结束的开始。

据说微软2016编程之美（http://studentclub.msra.cn/bop2016/，报名截止4月23日）初赛将会使用 Code Hunt 平台进行。于是我花了两天的时间试了一下。

网上有人说需要翻墙。但之前使用教育网访问是没有问题的，不过建议使用 Chrome 浏览器，IE略卡。

Zone: BOP 2016 Test

题型比较基础，但入手比较费时间。顺带一提，LINQ大法好。继续阅读“Code Hunt”

2016-03-292018-01-18

日常

维基毒晚期患者，正在为猫武士编写维基。

因为实在找不到更好的横幅所以只能无耻地去盗谷歌的横幅了。
CXuesong aka. forest93

另请参阅

GitHub: http://github.com/cxuesong

继续阅读“日常”

2016-03-292016-03-29

使用控制台访问百度贴吧

https://github.com/CXuesong/PrettyBots

去年写的代码，一直没上传。总之就是想给百度做个接口——虽然最后只做了一个贴吧的。后来，在这个接口的基础上，写了一个简易的贴吧控制台程序。（其实，如果不是上课压力重，估计百度控制台程序就能出来了……）

不过……说实话，用控制台封禁水军感觉还是很爽的（piiiia）
继续阅读“使用控制台访问百度贴吧”

2016-03-29

不要持久化 HashCode

如下所示

#if DEBUG
                    // We want to ensure we can change our hash function daily.
                    // This is perfectly fine as long as you don't persist the
                    // value from GetHashCode to disk or count on String A 
                    // hashing before string B.  Those are bugs in your code.
                    hash1 ^= ThisAssembly.DailyBuildNumber;
#endif
                    return hash1 + (hash2 * 1566083941);

855

856

857

858

859

860

861

862

#if DEBUG

// We want to ensure we can change our hash function daily.

// This is perfectly fine as long as you don't persist the

// value from GetHashCode to disk or count on String A

// hashing before string B. Those are bugs in your code.

hash1 ^= ThisAssembly.DailyBuildNumber;

#endif

return hash1 + (hash2 * 1566083941);

2016-03-142016-03-14

Reservoir sampling is a family of randomized algorithms for randomly choosing a sample of k items from a list S containing n items, where n is either a very large or unknown number. Typically n is large enough that the list doesn’t fit into main memory.

https://en.wikipedia.org/wiki/Reservoir_sampling

2016-03-02

Implementing a virtualized panel in WPF

ref = https://blogs.msdn.microsoft.com/dancre/2006/02/06/implementing-a-virtualized-panel-in-wpf-avalon/

2016-02-272016-02-27

Coursera Machine Learning Ex.6 2.5: Try your own emails

ml-spam-test-4 — 可能是 PowerWorld 的邮件内容太短了……

>> ex6_predictonly
键入需要检查的文件名[testMail.txt]：

==== Processed Email ====

do not repli to thi messag thi is an automat gener email thank you for your 
interest in powerworld simul number educ evalu edit click here to be redirect 
to the download site if the abov link doe not work pleas copi and past the 
follow into your browser httpaddr 

=========================

Processed testMail.txt

Spam Classification: 1
(1: 垃圾邮件, 0: 正常邮件)