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MySql server startup error 'The server quit without updating PID file '
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edited May 23 '14 at 8:20
answered Nov 15 '11 at 13:56
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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 to change XAMPP apache server port?
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324
To answer the original question:
To change the XAMPP Apache server port here the procedure :
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Apply multiple functions to multiple groupby columns
... similar dataframe as the one from above
df = pd.DataFrame(np.random.rand(4,4), columns=list('abcd'))
df['group'] = [0, 0, 1, 1]
df
a b c d group
0 0.418500 0.030955 0.874869 0.145641 0
1 0.446069 0.901153 0.095052 0.487040 0
2 0.843026 0.9361...
How do you delete an ActiveRecord object?
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4 Answers
4
Active
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How to write string literals in python without having to escape them?
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SilentGhostSilentGhost
246k5454 gold badges286286 silver badges278278 bronze badges
a...
Best way to serialize an NSData into a hexadeximal string
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edited Nov 1 '14 at 20:53
answered Jan 31 '12 at 18:18
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Read text file into string array (and write)
... Siu Ching Pong -Asuka Kenji-
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answered Aug 28 '13 at 5:17
Kyle LemonsKyle Lemons
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How to think in data stores instead of databases?
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149
There's two main things to get used to about the App Engine datastore when compared to 'traditi...