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How to know what the 'errno' means?
When calling execl(...) , I get an errno=2 . What does it mean? How can I know the meaning of this errno ?
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TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
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文章转自： 酷 壳 – CoolShell.cn
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Difference between System.DateTime.Now and System.DateTime.Today
Can anyone explain the difference between System.DateTime.Now and System.DateTime.Today in C#.NET? Pros and cons of each if possible.
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How to convert / cast long to String?
I just created sample BB app, which can allow to choose the date.
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How to obtain the number of CPUs/cores in Linux from the command line?
I have this script, but I do not know how to get the last element in the printout:
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Converting integer to string in Python
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Get URL of ASP.Net Page in code-behind [duplicate]
I have an ASP.Net page that will be hosted on a couple different servers, and I want to get the URL of the page (or even better: the site where the page is hosted) as a string for use in the code-behind. Any ideas?
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Programmatically retrieve memory usage on iPhone
...rieve the amount of memory my iPhone app is using at anytime, programmatically. Yes I'm aware about ObjectAlloc/Leaks. I'm not interested in those, only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog.
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Linear Regression and group by in R
I want to do a linear regression in R using the lm() function. My data is an annual time series with one field for year (22 years) and another for state (50 states). I want to fit a regression for each state so that at the end I have a vector of lm responses. I can imagine doing for loop for each ...
How can I update NodeJS and NPM to the next versions?
I just installed Node.js and npm (for additional modules).
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