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Mysql order by specific ID values
...rder by" using predefined set of column values (ID) like: order by (ID=1,5,4,3) so I would get record 1, 5, 4, 3 in that order out?
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Get a pixel from HTML Canvas?
...pixel and invert the color.
for (var i = 0, n = pix.length; i < n; i += 4) {
pix[i ] = 255 - pix[i ]; // red
pix[i+1] = 255 - pix[i+1]; // green
pix[i+2] = 255 - pix[i+2]; // blue
// i+3 is alpha (the fourth element)
}
// Draw the ImageData at the given (x,y) coordinates.
conte...
Why isn't std::initializer_list a language built-in?
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48
There were already examples of "core" language features that returned types defined in the std ...
Assigning code to a variable
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edited Apr 17 '14 at 19:38
answered Apr 16 '14 at 20:42
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__lt__ instead of __cmp__
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Alex MartelliAlex Martelli
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Cartesian product of x and y array points into single array of 2D points
...mpy.transpose([numpy.tile(x, len(y)), numpy.repeat(y, len(x))])
array([[1, 4],
[2, 4],
[3, 4],
[1, 5],
[2, 5],
[3, 5]])
See Using numpy to build an array of all combinations of two arrays for a general solution for computing the Cartesian product of N arrays.
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How do I commit only some files?
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wjandrea
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answered Aug 30 '11 at 6:28
AlexAlex
19k11...
How to understand Locality Sensitive Hashing?
...in python here which is using cosine similarity.
https://gist.github.com/94a3d425009be0f94751
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Remove columns from dataframe where ALL values are NA
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– Peter.k
Jun 26 '18 at 16:42
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Why are C# interface methods not declared abstract or virtual?
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147
For the interface, the addition of the abstract, or even the public keywords would be redundant...