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How to sort a dataframe by multiple column(s)
...; dd[with(dd, order(-z, b)), ]
b x y z
4 Low C 9 2
2 Med D 3 1
1 Hi A 8 1
3 Hi A 9 1
Edit some 2+ years later: It was just asked how to do this by column index. The answer is to simply pass the desired sorting column(s) to the order() function:
R> dd[order(-dd[,4], dd[,1]), ]
b x y ...
Cleanest and most Pythonic way to get tomorrow's date?
...comment, leap days pose no problem:
>>> datetime.date(2004, 2, 28) + datetime.timedelta(days=1)
datetime.date(2004, 2, 29)
>>> datetime.date(2004, 2, 28) + datetime.timedelta(days=2)
datetime.date(2004, 3, 1)
>>> datetime.date(2005, 2, 28) + datetime.timedelta(days=1)
da...
SQL Server Output Clause into a scalar variable
...Mikael ErikssonMikael Eriksson
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Where is my Django installation?
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answered Aug 12 '11 at 8:31
Uku LoskitUku Loskit
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2023年1月8日签到记录贴 - 灌水吐槽、新手试贴 - 清泛IT论坛，有思想、有深度
...的,如果您还未签到,请点此进行签到的操作. 我在 2023-01-08 12:31 完成签到,是今天第一个签到的用户,获得随机奖励 F币 5,另外我还额外获得了 F币 10.我今天最想说:「哈哈哈哈」. 我在 2023-01-08 20:46 完成签到,是今天第2个签到的用户,...
2025年8月1日签到记录贴 - 签到区 - 清泛IT社区，为创新赋能！
...成的,如果您还未签到,请点此进行签到的操作. 我在 2025-08-01 07:30 完成签到,是今天第一个签到的用户,获得随机奖励 小红花 10,另外我还额外获得了 小红花 10.我今天最想说:「该会员没有填写今日想说内容.」. 我在 2025-08-01 08:07 完...
Can't find a “not equal” css attribute selector
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mehulmptmehulmpt
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add a ...
How to add semicolon after method call when inside parameter list in IntelliJ IDEA?
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edited Dec 16 '19 at 13:38
agilob
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answered Jul ...
How to use JavaScript source maps (.map files)?
...ll you call it, that is what made me confused stackoverflow.com/a/27196201/861487
– Abdelouahab
Nov 28 '14 at 21:52
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Android studio: why are minSdkVersion and targetSdkVersion specified both in AndroidManifest.xml and
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coltox
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answered Nov 15 '13 at 14:04
mar3kkmar3kk
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