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ACM学习历程——HDU5017 Ellipsoid(模拟退火)(2014西安网赛K题)
---恢复内容开始---DescriptionGiven a 3-dimension ellipsoid(椭球面)your task is to find the minimal distance between the original point (0,0,0) and points on th...
分类:其他好文   时间:2014-11-01 16:03:11    阅读次数:259
POJ2531——Network Saboteur(随机化算法水一发)
Network SaboteurDescriptionA university network is composed of N computers. System administrators gathered information on the traffic between nodes, a...
分类:编程语言   时间:2014-10-30 16:43:29    阅读次数:281
Linux设备驱动:kobject原理与实例分析
1、Sysfs文件系统 "sysfsis a ram-based filesystem initially based on ramfs. It provides ameans to export kernel data structures, their attributes, and thelinkages between them to userspace.” Linux2.6内...
分类:系统相关   时间:2014-10-30 11:50:14    阅读次数:351
PB+MS SQL+触发器必须注意
PB+MS SQL+触发器必须注意: 若触发器存在两笔以上的返回值,比如两条update 语句,被误判为数据有改变,存盘不成功。 提示: Row changed between retrieve and update. No changes made to database. 所以MS SQL 触发器必须统一处理为: 触发器开始加: if@@ROWCOUNT=0 Return --提高效能 setnocount on --不返回统计笔数,可减少网络频繁响应,提高效性能;避免误判为数...
分类:数据库   时间:2014-10-29 19:27:33    阅读次数:210
C# - as
?? You can use the as operator to perform certain types of conversions between compatible reference types or nullable types. The as operator is like a cast operation. However, if the conversion i...
分类:Windows程序   时间:2014-10-28 20:10:04    阅读次数:272
A Tour of Go Methods
Go does not have classes. However, you can define methods on struct types.Themethod receiverappears in its own argument list between thefunckeyword an...
分类:其他好文   时间:2014-10-28 19:32:58    阅读次数:121
如何使官方提供的AppRTCDemo 运行在自己搭建的server(官方提供的apprtc)上(官方的server源码)
原文转自http://stackoverflow.com/questions/21085261/apprtcdemo-with-local-server-works-between-browsers-but-not-android-native-to-brI am developing a chat...
分类:移动开发   时间:2014-10-28 17:05:45    阅读次数:344
ISO C++ forbids comparison between pointer and integer
在g++下编译出现ISOC++forbidscomparisonbetweenpointerandinteger错误经过检查发现错误如下:while(cin.get()!="\n")continue;将其修改为:while(cin.get()!=‘\n‘)continue;在ISOC++中,"\n"常量字符串比较时是使用字符串的地址,所以为char*;‘\n’字符,是转换为int常量的..
分类:编程语言   时间:2014-10-28 15:47:23    阅读次数:413
Basic Concepts in OS X Operation System(OSX系统的一些基本概念),准确地说是mach内核的一些基本概念
TasksA task is a logical representation of an execution environment. Tasks are usedin order to divide system resources between each running program. E...
分类:系统相关   时间:2014-10-28 13:35:52    阅读次数:211
Android Lifecycle
1.Bundle savedInstanceState it is not persist. it does not share between activities, it is nolyfor one activity. it is saved for soft kill like: 1.o.....
分类:移动开发   时间:2014-10-28 07:02:20    阅读次数:211
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