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Order Bars in ggplot2 bar graph
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The key with ordering is to set the levels of the factor in the order you want. An ordered factor is not required; the extra information in an ordered factor isn't necessary and if these data are being used in any statistical model, the wrong parametris...
How to pass the value of a variable to the stdin of a command?
I'm writing a shell script that should be somewhat secure i.e. does not pass secure data through parameters of commands and preferably does not use temporary files. How can I pass a variable to the stdin of a command? Or, if it's not possible, how to correctly use temporary files for such task?
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How to unpack and pack pkg file?
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Can't use modulus on doubles?
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How to uncompress a tar.gz in another directory
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Why use iterators instead of array indices?
..., so you use it even with vectors just to get yourself into the proper mindset. Seriously, that's the only reason I do it - I don't think I've ever replaced a vector with a different kind of container.
Wow, this is still getting downvoted after three weeks. I guess it doesn't pay to be a little t...
Android存储系统基础知识：内部存储，外部存储，App特定目录 ASD(app speci...
...基础知识：内部存储，外部存储，App特定目录 ASD(app specific directory) 及 getASD代码实现
Android存储系统基础知识
从 Android 的角度来看 → 内部存储和 → 外部存储：
绝对路径(Absolute path...
How to obtain the number of CPUs/cores in Linux from the command line?
I have this script, but I do not know how to get the last element in the printout:
27 Answers
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MySQL Server has gone away when importing large sql file
...figuration file is large enough. On Debian: sudo nano
/etc/mysql/my.cnf, set wait_timeout = 600 seconds (you can
tweak/decrease this value when error 2006 is gone), then sudo
/etc/init.d/mysql restart. I didn't check, but the default value for
wait_timeout might be around 28800 seconds (8 ho...
Chrome doesn't delete session cookies
I'm trying to set session cookie in javascript like this:
13 Answers
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