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How to delete duplicate lines in a file without sorting it in Unix?
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From http://sed.sourceforge.net/sed1line.txt:
(Please don't ask me how this works ;-) )
# delete duplicate, consecutive lines from a file (emulates "uniq").
# First line in a set of duplicate lines is kept, rest are deleted.
s...
How to export collection to CSV in MongoDB?
... are required for csv.
According to this bug in the MongoDB issue tracker https://jira.mongodb.org/browse/SERVER-4224 you MUST provide the fields when exporting to a csv. The docs are not clear on it. That is the reason for the error.
Try this:
mongoexport --host localhost --db dbname --collectio...
How do I replace whitespaces with underscore?
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How to access session variables from any class in ASP.NET?
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(Updated for completeness)
You can access session variables from any page or control using Session["loginId"] and from any class (e.g. from inside a class library), using System.Web.HttpContext.Current.Session["loginId"].
But please read...
Accurate way to measure execution times of php scripts
... I know this is waaaaaay too late (almost 4 years), but as a comment... using these calculations (with the parameter get_as_float as true) will give you results in seconds, according to PHP documentation.
– Alejandro Iván
Mar 31 '15 at 2:34
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How do I get the path and name of the file that is currently executing?
...erent environments. Consider accepting Usagi's answer below: stackoverflow.com/a/6628348/851398
– faraday
Mar 5 '14 at 7:41
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Immutability of Strings in Java
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Oct 12 '09 at 7:04
gustafcgustafc
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Why should I use Google's CDN for jQuery?
...in the United States
was 344ms. And that 344ms applies to not only every HTTP request –
which the average web page now makes 93 of – but also every DNS lookup
and TCP connection... While average RTTs are improving, there are only
small additional gains to be had, as current networks are ...
Django: accessing session variables from within a template?
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if i use HttpResponse instead of render will i still be able to get the session attribute in my template.I am confused please tell me
– cafebabe1991
Jul 12 '14 at 18:33
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C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
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3.部分特化的定义与通用模板的定义完全无
来源：http://blog.csdn.net/kikikind/article/details/2713357
模板函数 特化 重定义