大约有 45,000 项符合查询结果（耗时：0.0324秒） [XML]
How do I find duplicates across multiple columns?
...
Duplicated id for pairs name and city:
select s.id, t.*
from [stuff] s
join (
select name, city, count(*) as qty
from [stuff]
group by name, city
having count(*) > 1
) t on s.name = t.name and s.city = t.city
...
What's the difference between passing by reference vs. passing by value?
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First and foremost, the "pass by value vs. pass by reference" distinction as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used ...
Is there a way to get rid of accents and convert a whole string to regular letters?
Is there a better way for getting rid of accents and making those letters regular apart from using String.replaceAll() method and replacing letters one by one?
Example:
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...进程。
/**
* oom_badness - heuristic function to determine which candidate task to kill
* @p: task struct of which task we should calculate
* @totalpages: total present RAM allowed for page allocation
*
* The heuristic for determining which task to kill is made to be as simple and
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Preserve line breaks in angularjs
...ular-with-newlines {
white-space: pre-wrap;
}
This will use newlines and whitespace as given, but also break content at the content boundaries. More information about the white-space property can be found here:
https://developer.mozilla.org/en-US/docs/Web/CSS/white-space
If you want to break...
How to handle configuration in Go [closed]
I'm new at Go programming, and I'm wondering: what is the preferred way to handle configuration parameters for a Go program (the kind of stuff one might use properties files or ini files for, in other contexts)?
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Site does not exist error for a2ensite
... Weird! This used to work fine without an extension in Ubuntu 12.04 and 12.10.
– FloatingRock
Mar 26 '14 at 11:21
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Switching from zsh to bash on OSX, and back again?
So Im learning to develop in Rails, and have discovered the power of zsh. However, for some of my other tasks, I wish to use normal Bash. Although they are the same, I just feel comfortable with the lay out of bash in some situations. How do I switch back and forth, or turn zsh on and off? Thanks!
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How to execute an external program from within Node.js?
...lt of the child process. Example... if the process returns an exit code 0, and I want to call a different method, I seem to run into a plethora of errors.
– continuousqa
Mar 20 '15 at 23:59
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Are nested HTML comments possible?
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Yes, HTML and XML don't allow to nest comments using <!--. What you can do in your own code is define a comment element and ignore it actively during parsing.
– Aaron Digulla
Jan 14 '09 at 14:0...