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Run a callback only if an attribute has changed in Rails
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edited May 24 '19 at 6:00
Wladimir Gramacho
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How to move columns in a MySQL table?
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answered Jul 24 '11 at 7:08
Ted HoppTed Hopp
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Git file permissions on Windows
...the execute bit set.
– tomlogic
Oct 24 '13 at 22:00
In my case I also added a new line to the file, and only then was ...
Python memory usage of numpy arrays
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You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
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lock(new object()) — Cargo cult or some crazy “language special case”?
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JleruOHePJleruOHeP
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add a co...
How does “304 Not Modified” work exactly?
...-side code.
– SLaks
Jan 7 '14 at 18:24
@SLaks: What happens if the page has a db call...There is a chance that the dat...
Reading a binary file with python
...Content[:20])
The body: ignore the heading bytes and the trailing byte (= 24); The remaining part forms the body, to know the number of bytes in the body do an integer division by 4; The obtained quotient is multiplied by the string 'i' to create the correct format for the unpack method:
struct.un...
How can I alter a primary key constraint using SQL syntax?
...);
– karsten314159
Dec 13 '18 at 12:24
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How to convert a private key to an RSA private key?
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This may be of some help (do not literally write out the backslashes '\' in the commands, they ...
How to make Sequelize use singular table names
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edited May 24 at 2:52
Felix
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answered Ap...