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Apply multiple <em>fem>unctions to multiple groupby columns
... 1]
d<em>fem>
a b c d group
0 0.418500 0.030955 0.874869 0.145641 0
1 0.446069 0.901153 0.095052 0.487040 0
2 0.843026 0.936169 0.926090 0.041722 1
3 0.635846 0.439175 0.828787 0.714123 1
A dictionary mapped <em>fem>rom column names to aggr...
How do you convert epoch time in C#?
...LukeHLukeH
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How can I extract the <em>fem>older path <em>fem>rom <em>fem>ile path in Python?
...path.split(os.path.abspath(existGDBPath))
('T:\\Data\\DBDesign', 'DBDesign_93_v141b.mdb')
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<em>fem>ollow
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Does the join order matter in SQL?
... ON b.ab_id = a.ab_id
LE<em>Fem>T JOIN c
ON c.ac_id = a.ac_id
AND c.<em>bcem>_id = b.<em>bcem>_id
is not equivalent to:
a LE<em>Fem>T JOIN c
ON c.ac_id = a.ac_id
LE<em>Fem>T JOIN b
ON b.ab_id = a.ab_id
AND b.<em>bcem>_id = c.<em>bcem>_id
Another (hope<em>fem>ully simpler) associativity example. Think o<em>fem> this as (a LE...
How to select a CRAN mirror in R
...hen to automate the selection:
R -e 'chooseCRANmirror(graphics=<em>Fem>ALSE, ind=87);library(rbundler);bundle()'
Where 87 is the number o<em>fem> the mirror you would like to use. This snippet also installs the rbundle <em>fem>or you. You can omit that i<em>fem> you like.
...
Proxy with express.js
...
87
I <em>fem>ound a shorter and very straight<em>fem>orward solution which works seamlessly, and with authentica...
CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...迟的。据统计，采用CDN技术，能处理整个网站页面的70%～95％的内容访问量，减轻服务器的压力，提升了网站的性能和可扩展性。
与目前现有的内容发布模式相比较，CDN强调了网络在内容发布中的重要性。通过引入主动的内容...
Convert dmesg timestamp to custom date <em>fem>ormat
... -n $(date --date="@$(echo "$(grep btime /proc/stat|cut -d " " -<em>fem> 2)+\1" | <em>bcem>)" +"%c");echo -n "]";echo -n "\2"#e'
Here's an example:
$ dmesg|tail | sed -r 's#^\[([0-9]+\.[0-9]+)\](.*)#echo -n "[";echo -n $(date --date="@$(echo "$(grep btime /proc/stat|cut -d " " -<em>fem> 2)+\1" | <em>bcem>)" +"%c");echo -n "...
How to detect Ctrl+V, Ctrl+C using JavaScript?
...
Chris AnderssonChris Andersson
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How to initialize a struct in accordance with C programming language standards
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awesome, thanks. you can even nest em: static oxeRay2<em>fem> ray = { .unitDir = { .x = 1.0<em>fem>, .y = 0.0<em>fem> } };
– orion elenzil...