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R - Concatenate two dataframes?
...7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 14 NA
> new <- rbind(a,b)
> new
a b c
1 0 3 6
2 1 4 7
3 2 5 8
4 9 NA 12
5 10...
How to determine if a number is a prime with regex?
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answered May 8 '10 at 18:10
Platinum AzurePlatinum Azure
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Best way to find the intersection of multiple sets?
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answered Mar 29 '10 at 22:55
sthsth
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git log of a single revision
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answered Nov 2 '10 at 21:20
Michał TrybusMichał Trybus
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How to increase space between dotted border dots
...SFiddle or take a look at the code snippet example:
div {
padding: 10px 50px;
}
.dotted {
border-top: 1px #333 dotted;
}
.dotted-gradient {
background-image: linear-gradient(to right, #333 40%, rgba(255, 255, 255, 0) 20%);
background-position: top;
background-size: 3px 1px;
...
How to assign an exec result to a sql variable?
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100
I always use the return value to pass back error status. If you need to pass back one value I...
month name to month number and vice versa in python
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answered Aug 5 '10 at 18:49
David ZDavid Z
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How to get thread id from a thread pool?
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answered Jul 20 '10 at 20:59
skaffmanskaffman
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How to get a specific version of a file in Mercurial?
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answered Jan 21 '10 at 14:32
djcdjc
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How to delete multiple values from a vector?
I have a vector like: a = c(1:10) and I need to remove multiple values, like: 2, 3, 5
8 Answers
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