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R - Concatenate two dataframes?
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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 NA 13
6 11 ...
For files in directory, only echo filename (no path)
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answered Jan 25 '12 at 22:20
SiegeXSiegeX
114k2020 gold badges127127 silver badges151151 bronze badges
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List all the files that ever existed in a Git repository
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Feb 12 '09 at 21:39
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C# Convert List to Dictionary
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edited Jul 20 '12 at 14:28
answered Jul 20 '12 at 14:11
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PHP Timestamp into DateTime
...to the DateTime constructor as-is:
// Assuming $item->pubDate is "Mon, 12 Dec 2011 21:17:52 +0000"
$dt = new DateTime($item->pubDate);
That being said, if you do have a timestamp that you wish to use instead of a string, you can do so using DateTime::setTimestamp():
$timestamp = strtotime(...
how to set textbox value in jquery
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edited Nov 16 '10 at 12:32
answered Nov 16 '10 at 12:16
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iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]
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edited Sep 17 '12 at 8:55
John Topley
104k4343 gold badges186186 silver badges234234 bronze badges
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JS: Check if date is less than 1 hour ago?
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answered Feb 10 '12 at 8:25
Mike SamuelMike Samuel
106k2626 gold badges195195 silver badges228228 bronze badges
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Differences between “java -cp” and “java -jar”?
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answered Aug 12 '12 at 13:59
Andreas DolkAndreas Dolk
106k1515 gold badges165165 silver badges247247 bronze badges
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Why sizeof int is wrong, while sizeof(int) is right?
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edited Oct 29 '12 at 17:49
answered Oct 29 '12 at 11:17
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