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Storing SHA1 hash values in MySQL
...it per character and thus would need 160/4 = 40 characters. But if you use 8 bit per character, you would only need a 160/8 = 20 character long field.
So I recommend you to use BINARY(20) and the UNHEX function to convert the SHA1 value to binary.
I compared storage requirements for BINARY(20) and...
How to get a list of installed android applications and pick one to run
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edited Jan 3 '18 at 8:14
frogatto
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how to customize `show processlist` in mysql?
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answered May 8 '14 at 17:56
Reza SReza S
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Repeat table headers in print mode
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answered Nov 8 '08 at 1:19
tvanfossontvanfosson
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“used as value” in function call
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edited Nov 28 '18 at 7:21
Flimzy
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return query based on date
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answered Jan 12 '12 at 13:28
mnemosynmnemosyn
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How to check whether a file or directory exists?
...her error*/ }
– Tobia
Sep 11 '14 at 8:50
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Why is everything in this language so complicated?
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Regex to replace everything except numbers and a decimal point
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ChanduChandu
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How can I obtain the element-wise logical NOT of a pandas Series?
...ean Series, use ~s:
In [7]: s = pd.Series([True, True, False, True])
In [8]: ~s
Out[8]:
0 False
1 False
2 True
3 False
dtype: bool
Using Python2.7, NumPy 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, bes...