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MongoDB drop every database
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you can create a javascript loop that do the job and then execute it in the mongoconsole.
var ...
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...he nice info!
– NineCattoRules
Apr 14 '15 at 8:56
21
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How to set the JDK Netbeans runs on?
I have older NB6.7, NB6.9, NB7.0, which used to run on jdk1.6.0_21 and jdk1.6.0_25. Now I've removed those JDKs and only have jdk1.6.0_26 and jdk1.7.0 left, but I still want to keep the older NBs, but now when I run them, I get this message:
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Is there a way to use SVG as content in a pseudo element :before or :after
...g xmlns="http://www.w3.org/2000/svg">
<circle cx="100" cy="50" r="40" stroke="black" stroke-width="2" fill="red"/>
<polyline points="20,20 40,25 60,40 80,120 120,140 200,180" style="fill:none;stroke:black;stroke-width:3"/>
</svg>
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What is difference between monolithic and micro kernel?
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Monolithic kernel is a single large process running entirely in a single address space. It is a ...
How do I sort strings alphabetically while accounting for value when a string is numeric?
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Pass a custom comparer into OrderBy. Enumerable.OrderBy will let you specify any comparer you li...
远程临场机器人 你会买单吗？ - 资讯 - 清泛网 - 专注C/C++及内核技术
远程临场机器人 你会买单吗？在今年的CES上，英特尔展示了可以远程通话的移动滚轮机器人。如果你是一个美剧迷，《生活大爆炸》里的谢耳朵就研发过这样的机器。谢耳朵因 在今年的CES上，英特尔展示了可以远程通话的移...
Convert hex string to int
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It's simply too big for an int (which is 4 bytes and signed).
Use
Long.parseLong("AA0F245C", 16);
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小心！创业者不可不知的互联网家装惊天伪命题 - 资讯 - 清泛网 - 专注C/C++...
小心！创业者不可不知的互联网家装惊天伪命题互联网家装的伪命题与其他行业的伪命题一样，都会在一定程度上蒙蔽我们的双眼，影响我们对于它们的真实判断。只有真正了解这些伪命题，才能在创业的路上少走弯路，才能知...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... buffers
Swap: 2097144k total, 100k used, 2097044k free, 26482048k cached
VIRT RES SHR %MEM
1892g 21g 21g 69.6
这台MongoDB服务器有没有性能问题？大家可以一边思考一边继续阅读。
先讲讲Linux是如何管理内存的
在Linux里（别的系统也差不多...