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rsync exclude according to .gitignore & .hgignore & svn:ignore like --filter=:C
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edited Sep 13 '15 at 17:24
undefined
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answe...
How to change port number for apache in WAMP
...is http://localhost/ in the browser it is not working. I am getting a 404 error and blank page .
8 Answers
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What is the “assert” function?
... community wiki
8 revs, 5 users 43%bdonlan
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Replacement for “rename” in dplyr
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148
dplyr version 0.3 added a new rename() function that works just like plyr::rename().
df <- ...
How is Pythons glob.glob ordered?
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XionXion
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1
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cartesian product in pandas
...port DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']]
Output:
col1 col2 col3
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
See here f...
How do I specify a password to 'psql' non-interactively?
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154
From the official documentation:
It is also convenient to have a ~/.pgpass file to avoid reg...
sql query to return differences between two tables
...easchftreaschf
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How to sum a variable by group
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404
Using aggregate:
aggregate(x$Frequency, by=list(Category=x$Category), FUN=sum)
Category x
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combinations between two lists?
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edited Apr 5 at 20:47
Bill
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answered Oct 1...