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NSOperationQueue 和 NSOperation
TheNSOperationQueueclass regulates the execution of a set ofNSOperationobjects. After being added to a queue, an operation remains in that queue until...
分类:其他好文   时间:2015-01-27 14:43:59    阅读次数:319
欧拉计划(python) problem 15
Lattice paths Problem 15 Starting in the top left corner of a 2×2 grid, and only being able to move to the right and down, there are exactly 6 routes to the bottom right corner. How many su...
分类:编程语言   时间:2015-01-27 13:25:01    阅读次数:191
Decode Ways
Decode WaysA message containing letters fromA-Zis being encoded to numbers using the following mapping:'A' -> 1'B' -> 2...'Z' -> 26Given an encoded me...
分类:其他好文   时间:2015-01-26 20:47:54    阅读次数:163
所思所想 建模
组合主键的关系描述关系的属性去分析他们的数据库去分析他们的业务逻辑就是这种感觉,难得的感觉 feel good 我发现做模板和做项目是一样的道理,做模板仿照的是样式做项目仿照的是业务逻辑从一个系统中去分析它的业务逻辑,数据库结构然后就可以模仿它了。其实同类型的系统,具有同样的业务逻辑。也应该说,业务...
分类:其他好文   时间:2015-01-26 09:59:46    阅读次数:174
C++开发--在Visual Studio2013中使用boost::split()编译过程中出现error C4996
Visual Studio is being overly cautious. In debug mode, visual studio uses something called "Checked Iterators". Pointers are also iterators, but the c...
分类:编程语言   时间:2015-01-25 17:58:11    阅读次数:448
好RESTful API的设计原则
说在前面,这篇文章是无意中发现的,因为感觉写的很好,所以翻译了一下。由于英文水平有限,难免有出错的地方,请看官理解一下。翻译和校正文章花了我大约2周的业余时间,如有人愿意转载请注明出处,谢谢^_^Principles of good RESTful API Design好RESTful API的设计...
分类:Windows程序   时间:2015-01-23 19:46:35    阅读次数:244
Codeforces Good Bye 2014 B. New Year Permutation
这道题我一开始的想法是:把每个需要交换的都交换了,循环n次肯定就是结果,n又比较小不会超时。但是这种想法too young,因为它无法交换需要间接交换的两个数。所以一种正确解法是:找出能间接交换的所有i和j,把对应的A[i][j]=A[j][i]='1',之后只需扫一遍整个矩阵把要换的换了就是最终结...
分类:其他好文   时间:2015-01-23 12:45:09    阅读次数:226
uva656 Optimal Programs
Optimal Programs As you know, writing programs is often far from being easy. Things become even harder if your programs have to be as fast as possible...
分类:其他好文   时间:2015-01-22 17:57:18    阅读次数:163
LinuxShell脚本编程基础5--数值,字符串,文件状态测试,((..))和[[..]]的使用
1、数值比较! /bin/bashecho "enter a score:"read num1if [ $num1 -ge 80 ]then echo "Very Good"elif [ $num1 -lt 80 -a $num1 -ge 60 ]then echo "Good"else echo ...
分类:系统相关   时间:2015-01-22 12:53:09    阅读次数:230
How do I determine if I'm being run under the debugger?
#include #include #include #include #include static bool AmIBeingDebugged(void) // Returns true if the current process is being debugged (either ...
分类:其他好文   时间:2015-01-21 19:32:54    阅读次数:156
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