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Opposite of %in%: exclude rows with values specified in a vector
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Hmisc has %nin% function, which should do this.
https://www.rdocumentation.org/packages/Hmisc/versions/4.4-0/topics/%25nin%25
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Group vs role (Any real difference?)
...d role-based access control models (like with anything of course):
http://www.lhotka.net/weblog/CommentView,guid,9efcafc7-68a2-4f8f-bc64-66174453adfd.aspx
About a decade ago I saw some research on attribute-based and relationship-based access control which provide much better granularity than role...
How to get device make and model on iOS?
...TF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>x86_64</key>
<string>Simulator</string>
<key>i386</key>
<string>Simulator<...
What is the difference between quiet NaN and signaling NaN?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Possible to do a MySQL foreign key to one of two possible tables?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How can I find the version of the Fedora I use?
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The proposed standard file is /etc/os-release. See http://www.freedesktop.org/software/systemd/man/os-release.html
You can execute something like:
$ source /etc/os-release
$ echo $ID
fedora
$ echo $VERSION_ID
17
$ echo $VERSION
17 (Beefy Miracle)
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不到20个积木块，我用App Inventor 2给女儿做了个接星星小游戏 - App应用开...
...精灵引擎的潜力远超你的想象。
> 文档参考：https://www.fun123.cn/reference/components/animation.html
Logical operators for boolean indexing in Pandas
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Simple explanation of MapReduce?
... quick and "for dummies" introduction to MapReduce is available at: http://www.marcolotz.com/?p=67
Posting some of it's content:
First of all, why was MapReduce originally created?
Basically Google needed a solution for making large computation jobs easily parallelizable, allowing data to be distrib...
Determine the process pid listening on a certain port
...k -TERM $port/tcp # with SIGTERM
Also -k is supported by FreeBSD: http://www.freebsd.org/cgi/man.cgi?query=fuser
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