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What is the benefit of zerofill in MySQL?
...rkByers, Practically speaking though, wouldn't most client-libraries (e.g. PHP) simply strip the zeros off before they hand it over to the application code? If so, then it really seems somewhat pointless. A bad design in the early days of MySQL.
– Pacerier
May...
Moving from CVS to Git: $Id$ equivalent?
...al). The git describe command offers others and does so quite well.
For example, when I run git describe in my master branch of my Java memcached client source, I get this:
2.2-16-gc0cd61a
That says two important things:
There have been exactly 16 commits in this tree since 2.2
The exact sourc...
How to implement a queue with three stacks?
...r Sedgewick have confirmed they are not aware of a 3-stack solution within all the constraints of the original question
DETAILS
There are two implementations behind this link: http://www.eecs.usma.edu/webs/people/okasaki/jfp95/index.html
One of them is O(1) with three stacks BUT it uses lazy exe...
Why does Double.NaN==Double.NaN return false?
...enormalized value or a signed zero, and an operation that has no mathematically definite result produces NaN. All numeric operations with NaN as an operand produce NaN as a result. As has already been described, NaN is unordered, so a numeric comparison operation involving one or two NaNs returns fa...
#define macro for debug printing in C?
.... } while (0) idiom ensures that the code acts like a statement (function call). The unconditional use of the code ensures that the compiler always checks that your debug code is valid — but the optimizer will remove the code when DEBUG is 0.
If you want to work with #ifdef DEBUG, then change th...
python: Change the scripts working directory to the script's own directory
... Always keep data and code separated, unless data is not transitory. For example, if you have icons, that is data, but it's not transitory, and it makes sense to consider it relative to the software bundle (whatever that means)
– Stefano Borini
Sep 16 '09 at 14...
常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...gout,shutdown,reboot,useradd,passwd,ls,ll,cd,mkdir,vi,cp,rm,mv,chmod,chown,find,grep,tail,tar,gzip,fdisk,kill,netstat等。一、注销，关机，重启，新建用户、删除用户
1. 注销系统的命令
logout 、exit
这两个命令都可以用来退出当前所登录的服务器，若想...
recursively add file extension to all files
...rectories containing files with no file extension. I want to add .jpg to all the files contained within these directories. I've seen bash scripts for changing the file extension but not for just adding one. It also needs to be recursive, can someone help please?
...
Mix Razor and Javascript code
...
It returns Uncaught SyntaxError: Unexpected token & because the model becomes something like this [{"Id":1,"Name":"Name}]
– Weihui Guo
Feb 4 '19 at 15:33
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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?
...
RaisePropertyChanged("ViewModelCopyOfSomeProperty");
}
But typically this is only needed if more than one object will be making changes to the Model's data, which is not usually the case.
If you ever have a case where you don't actually have a reference to your Model property to attach t...