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Index on multiple columns in Ruby on Rails
...x with the ordering columns to the right. stackoverflow.com/questions/6098616/dos-and-donts-for-indexes
– Denis de Bernardy
May 29 '11 at 20:36
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PendingIntent does not send Intent extras
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edited Jun 8 '16 at 7:35
answered Jun 8 '16 at 7:24
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How do you detect Credit card type based on number?
...}|22[3-9][0-9]{4,}|2[3-6][0-9]{5,}|27[01][0-9]{4,}|2720[0-9]{3,}$ Before 2016, MasterCard numbers start with the numbers 51 through 55, but this will only detect MasterCard credit cards; there are other cards issued using the MasterCard system that do not fall into this IIN range. In 2016, they wil...
Purpose of memory alignment
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ejohnso49
63299 silver badges1616 bronze badges
answered Dec 19 '08 at 15:20
Paul TomblinPaul Tomblin
162k5...
Docker EXPOSE a port only to Host
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answered Feb 28 '14 at 16:34
ZeissSZeissS
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How can I extend typed Arrays in Swift?
...med to 'Sequence'
– sandover
Apr 5 '16 at 4:23
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Why you didn't use Iterator.Element in return ty...
Scatter plot and Color mapping in Python
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167
Here is an example
import numpy as np
import matplotlib.pyplot as plt
x = np.random.rand(100...
Emulating a do-while loop in Bash
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edited Mar 25 '17 at 16:55
Peter Mortensen
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insert a NOT NULL column to an existing table
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edited Sep 21 '16 at 10:12
answered Aug 16 '10 at 12:14
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HTML/CSS: Make a div “invisible” to clicks?
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answered Apr 25 '16 at 16:05
Donald DuckDonald Duck
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