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'float' vs. 'double' precision
...ry representation, not a decimal one.
Single precision (float) gives you 23 bits of significand, 8 bits of exponent, and 1 sign bit.
Double precision (double) gives you 52 bits of significand, 11 bits of exponent, and 1 sign bit.
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Difference between Django's annotate and aggregate methods?
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3 Answers
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How can I split and parse a string in Python?
I am trying to split this string in python: 2.7.0_bf4fda703454
3 Answers
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Extract first item of each sublist
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Using list comprehension:
>>> lst = [['a','b','c'], [1,2,3], ['x','y','z']]
>>> lst2 = [item[0] for item in lst]
>>> lst2
['a', 1, 'x']
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SQL UPDATE all values in a field with appended string CONCAT not working
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| id | data |
+------+-------+
| 1 | max |
| 2 | linda |
| 3 | sam |
| 4 | henry |
+------+-------+
4 rows in set (0.02 sec)
mysql> update t set data=concat(data, 'a');
Query OK, 4 rows affected (0.01 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> select * from t;
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How to display full (non-truncated) dataframe information in html when converting from pandas datafr
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edited Sep 23 at 10:41
jahmia
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answered Aug 17 '14 at 18:...
How to Copy Contents of One Canvas to Another Canvas Locally
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edited May 23 '17 at 10:31
Community♦
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answered Aug 21 '11 at 22:30
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Double Iteration in List Comprehension
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answered Apr 20 '16 at 5:34
SkamSkam
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