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In a javascript array, how do I get the last 5 elements, excluding the first element?
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SLaksSLaks
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Changing column names of a data frame
... data.frame(bad=1:3, worse=rnorm(3))
R> X
bad worse
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
R> colnames(X) <- c("good", "better")
R> X
good better
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
You can also subset:
R> colnames(X)[2] <- "superduper"
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How to get all possible combinations of a list’s elements?
...ist with 15 numbers in, and I need to write some code that produces all 32,768 combinations of those numbers.
27 Answers
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Sending email with PHP from an SMTP server
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171
When you are sending an e-mail through a server that requires SMTP Auth, you really need to spe...
Detecting iOS / Android Operating system
...id";
}
// iOS detection from: http://stackoverflow.com/a/9039885/177710
if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
return "iOS";
}
return "unknown";
}
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What does map(&:name) mean in Ruby?
...as originally added by ActiveSupport but has been integrated into Ruby 1.8.7. This is its implementation:
class Symbol
def to_proc
Proc.new do |obj, *args|
obj.send self, *args
end
end
end
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Set focus on textbox in WPF
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usefulBeeusefulBee
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Getting the folder name from a path
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edited Sep 17 '10 at 15:10
answered Sep 17 '10 at 15:03
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bash: mkvirtualenv: command not found
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107
Solution 1:
For some reason, virtualenvwrapper.sh installed in /usr/bin/virtualenvwrapper.sh, i...
How to increase font size in the Xcode editor?
... the font.
– matt
Nov 29 '11 at 18:37
Thanks! I'd like to add that if you have other files opened when you change the ...