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Difference between `mod` and `rem` in Haskell
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They're not the same when the second argument is negative:
2 `mod` (-3) == -1
2 `rem` (-3) == 2
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On EC2: sudo node command not found, but node without sudo is ok
I have just installed nodejs on a new EC2 micro instance.
12 Answers
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Converting a date string to a DateTime object using Joda Time library
I have a date as a string in the following format "04/02/2011 20:27:05" . I am using Joda-Time library and would like to convert it to DateTime object. I did:
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In an array of objects, fastest way to find the index of an object whose attributes match a search
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answered Apr 19 '13 at 8:28
Pablo Francisco Pérez HidalgoPablo Francisco Pérez Hidalgo
23.7k77 gold badges3131 silver badges5151 bronze badges
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sed: print only matching group
... replaced with the contents of the group
echo "foo bar <foo> bla 1 2 3.4" |
sed -n 's/.*\([0-9][0-9]*[\ \t][0-9.]*[ \t]*$\)/\1/p'
2 3.4
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Pad a number with leading zeros in JavaScript [duplicate]
...e.
Example usage:
pad(10, 4); // 0010
pad(9, 4); // 0009
pad(123, 4); // 0123
pad(10, 4, '-'); // --10
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How to extract base URL from a string in JavaScript?
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20 Answers
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How to get client's IP address using JavaScript?
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Shading a kernel density plot between two points.
...x,y) pairs.
Edit: Here you go:
x1 <- min(which(dens$x >= q75))
x2 <- max(which(dens$x < q95))
with(dens, polygon(x=c(x[c(x1,x1:x2,x2)]), y= c(0, y[x1:x2], 0), col="gray"))
Output (added by JDL)
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Downloading images with node.js [closed]
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edited Feb 12 '14 at 10:11
answered Oct 5 '12 at 18:01
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