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Position of least significant bit that is set
...MultiplyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
r = MultiplyDeBruijnBitPosition[((uint32_t)((v & -v) * 0x077CB531U)) >> 27];
Helpful references:
"Using de Bruijn Sequences ...
How can I calculate the time between 2 Dates in typescript
...70-01-01, and subtract those:
var time = new Date().getTime() - new Date("2013-02-20T12:01:04.753Z").getTime();
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How to escape braces (curly brackets) in a format string in .NET
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svick
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answered Feb 26 '13 at 9:12
Guru KaraGur...
PHP substring extraction. Get the string before the first '/' or the whole string
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edited Dec 20 '09 at 14:21
answered Dec 20 '09 at 14:11
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Frequency table for a single variable
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edited Sep 26 '12 at 20:23
answered Aug 31 '12 at 0:14
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Plot a legend outside of the plotting area in base graphics?
...yword "topright").
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A <- data.frame(x=rnorm(100, 20, 2), y=rnorm(100, 20, 2))
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SimoneSimone
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Numbering rows within groups in a data frame
...a 0.30776611 3
5 aaa 0.46854928 4
3 aaa 0.55232243 5
10 bbb 0.17026205 1
8 bbb 0.37032054 2
6 bbb 0.48377074 3
9 bbb 0.54655860 4
7 bbb 0.81240262 5
13 ccc 0.28035384 1
14 ccc 0.39848790 2
11 ccc 0.62499648 3
15 ccc 0.76255108 4
12 ccc 0.88216552 5
If df$cat is a f...
How to add texture to fill colors in ggplot2
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...use the measurements where it did work to build up a training dataset (of ~2000 paw impacts from ~30 different dogs) to recognize which paw is which, and the problem reduces to a supervised classification (With some additional wrinkles... Image recognition is a bit harder than a "normal" supervised ...