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How to find out which package version is loaded in R?
...sionInfo() to accomplish that.
> sessionInfo()
R version 2.15.0 (2012-03-30)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 ...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...n。Version 1是21 x 21的矩阵，Version 2是 25 x 25的矩阵，Version 3是29的尺寸，每增加一个version，就会增加4的尺寸，公式是：(V-1)*4 + 21（V是版本号） 最高Version 40，(40-1)*4+21 = 177，所以最高是177 x 177 的正方形。
下面我们看看一个二维...
How to justify a single flexbox item (override justify-content)
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There doesn't seem to be justify-self, but you can achieve similar result setting appropriate ma...
What, why or when it is better to choose cshtml vs aspx?
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Joel EthertonJoel Etherton
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?
...issing features, give Mongolian DeadBeef a try: https://github.com/marcello3d/node-mongolian
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Quickly find whether a value is present in a C array?
...rt enough to unroll the loop. Here's a way to do it which incorporates the 3 ideas I mentioned in my comment: Loop unrolling, cache prefetch and making use of the multiple load (ldm) instruction. The instruction cycle count comes out to about 3 clocks per array element, but this doesn't take into ac...
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
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300
Your first port of call should be the documentation which explains it reasonably clearly:
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Client-server synchronization pattern / algorithm?
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answered Jan 5 '09 at 13:47
S.LottS.Lott
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How do you close/hide the Android soft keyboard using Java?
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How can I add an animation to the activity finish()
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GoofyaheadGoofyahead
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