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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...oDB本身有一个mongoimport工具可供使用，不过它只接受json、csv等格式的源文件，不适合我的需求，所以我没用，而是用PHP写了一个脚本，平稳运行了一段时间后，我发现数据导入的速度下降了，同时PHP抛出异常：
cursor timed out (time...
Is there a naming convention for git repositories?
...ds are hard to understand. I know, I'm German. "Donaudampfschifffahrtskapitänspatentausfüllungsassistentenausschreibungsstellenbewerbung."
"_" is harder to type than "-"
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Find mouse position relative to element
...t that you added the event listener to.
– Linus Unnebäck
Jul 31 '15 at 7:19
2
This seems to give...
What's this =! operator? [duplicate]
... -b, vs a -= b. Here of old be dragons, but none so great as before after Eärendil slew Ancalagon the Black and broke Thangoradrim beneath his fall. I was there when we thought evil vanquished forever, but ever it returns from the darkest of codes to trouble us anew.
– tchrist...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...O
最后一个系统错误的描述。
FIELDWIDTHS
字段宽度列表(用空格键分隔)。
FILENAME
当前文件名。
FNR
同NR，但相对于当前文件。
FS
字段分隔符(默认是任何空格)。
IGNORECASE
如果为真，则进行忽略...
GoogleTest: How to skip a test?
...some message") (note the trailing underscore)
– Matthäus Brandl
Apr 16 at 15:27
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Is there a Unix utility to prepend timestamps to stdin?
... 2; STDOUT.flush; sleep 2; puts 3" | ts '%F %T'
– umläute
Jan 12 '17 at 15:04
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How can I find non-ASCII characters in MySQL?
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this is also useful to find characters with accents (á ä etc) or character not belonging to encoding
– Glasnhost
Oct 22 '14 at 12:34
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Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...t it, and I am much obliged to you for having taught me that.
— Molière: The Middle Class Gentleman, Act 2, Scene 4
As Monsieur Jourdain did with prose, C# and even Java people already use RAII, but in hidden ways. For example, the following Java code (which is written the same way in C# b...