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What is the ultimate postal code and zip regex?
...something like 10000|10001|10002|10003|.......
– Kibbee
Feb 23 '09 at 17:17
for validating a field go here regexlib.co...
Avoiding if statement inside a for loop?
...he same. This is against "worrying about the performance".
If this is indeed the case, the branch predictor will have no problem in predicting the (constant) result. As such, this will only cause a mild overhead for mispredictions in the first few iterations. It's nothing to worry about in terms o...
创业测试：50个迹象表明你真该创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...方的水管裂开后， 你不仅能把它修好，并且还能比之前安装的更好。你可以将此看做是你可以着手创业的信号。
34.你喜欢汲取新技能和知识。有些人对于新技能和知识有着难以抑制的学习渴望。但是在年复一年的相同工作中，...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
...传输仍然保留它们本身的特性，向上不提供通用、所有都包含的接口。然而，提供最小化接口（尤其是：消息分割，消息分段和消息原子化），并且要求更高层能够统一地处理不同的底层传输的特性。 具体的来说，这意味着传...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1500字节，光纤可以达到4000多个字节，如果你的一个网络包没有放满这个MTU，那就是在浪费网络带宽，因为网卡的驱动程序只有一块一块地读效率才会高。因此，网络发包时，我们需要收集到足够多的信息后再做网络I/O，这也是...
How to resolve merge conflicts in Git?
...Step 2: Run following command in terminal
git mergetool
Step 3: You will see a vimdiff display in following format
╔═══════╦══════╦════════╗
║ ║ ║ ║
║ LOCAL ║ BASE ║ REMOTE ║
║ ║ ║ ...
what is the difference between a portlet and a servlet?
...ontainers (and servlets). Though there are definitely strong parallels between these two standards they differ in containers, APIs, life cycle, configuration, deployment, etc.
The main difference between portlet vs. servlet could be that while servlet always responds to single type of action - req...
vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...ost 下载可以到官方网站下载：
http://www.boost.org/
（2）安装VS2008 IDE
【Setp2 编译Boost】
1.打开Visual Studio 2008 命令提示窗口
2.进入D:\05_Computer\04_3rdPatry\02Boost\boost_1_44_0\boost_1_44_0\tools\jam\src
3.执行 build.bat 会在D:\05_Computer\04_3rdPa...
Create the perfect JPA entity [closed]
I've been working with JPA (implementation Hibernate) for some time now and each time I need to create entities I find myself struggling with issues as AccessType, immutable properties, equals/hashCode, ... .
So I decided to try and find out the general best practice for each issue and write this ...
Entity Framework and Connection Pooling
...ttached entity you want to save.
Combine these two patterns and you will see some interesting effects. You have only one instance of entity for the whole application. Any changes to the entity affect the whole application even if changes are not yet persisted (commited). In the most times this is n...