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How do you detect Credit card type based on number?
...ar expression like the ones below: Credit for original expressions
Visa: ^4[0-9]{6,}$ Visa card numbers start with a 4.
MasterCard: ^5[1-5][0-9]{5,}|222[1-9][0-9]{3,}|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 5...
Using python map and other functional tools
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54
The easiest way would be not to pass bars through the different functions, but to access it dire...
Pandas selecting by label sometimes return Series, sometimes returns DataFrame
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answered Dec 4 '13 at 19:36
Dan AllanDan Allan
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How can I filter a date of a DateTimeField in Django?
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How can I verify if one list is a subset of another?
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Boris
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answered May 16 '13 at 4:59
Yann VernierYann ...
How to debug Apache mod_rewrite
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284
One trick is to turn on the rewrite log. To turn it on,try these lines in your apache main confi...
Use underscore inside Angular controllers
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TWright
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answered Feb 19 '13 at 22:33
satchmorunsatchmorun
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How to do a scatter plot with empty circles in Python?
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Gary KerrGary Kerr
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How to clear variables in ipython?
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answered Apr 8 '14 at 10:27
aisbaaaisbaa
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What does the [Flags] Enum Attribute mean in C#?
...by the .ToString() method:
enum Suits { Spades = 1, Clubs = 2, Diamonds = 4, Hearts = 8 }
[Flags] enum SuitsFlags { Spades = 1, Clubs = 2, Diamonds = 4, Hearts = 8 }
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var str1 = (Suits.Spades | Suits.Diamonds).ToString();
// "5"
var str2 = (SuitsFlags.Spades | SuitsFlags.Diamonds).T...