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MySQL Insert into multiple tables? (Database normalization?)
...n. That's why I used the BEGIN and COMMIT here.
Comment again if you need more info :)
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Abort makefile if variable not set
...rror MY_FLAG is not set)
endif
Note that the lines must not be indented. More precisely, no tabs must precede these lines.
Generic solution
In case you're going to test many variables, it's worth defining an auxiliary function for that:
# Check that given variables are set and all have non-em...
Algorithm to detect corners of paper sheet in photo
...ving small objects and or noise, lower the canny restraints, so it accepts more edges, and then find the largest closed contour (in OpenCV use findcontour() with some simple parameters, I think I used CV_RETR_LIST). might still struggle when it's on a white piece of paper, but was definitely providi...
Run cron job only if it isn't already running
... It's better.
Now you don't have to write the code yourself. Check out more reasons here: https://serverfault.com/a/82863
/usr/bin/flock -n /tmp/my.lockfile /usr/local/bin/my_script
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CSS Cell Margin
... <td style="padding-right:10px">data</td>
<td>more data</td>
</tr>
</table>
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FFmpeg: How to split video efficiently?
...g another -ss before the input file for the a 'fast seek' followed by the more accurate slow seek.
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The differences between .build, .create, and .create! and when should they be used?
... people using .build , .create , and .create! within their controllers more and more lately. What's the difference from just using .new and passing the param'd object and then .save ? Are there pros and cons? Does using these other methods offer benefits?
...
Meaning of 'const' last in a function declaration of a class?
... and you cannot therefore change any member data. (Unless you use mutable, more on that later).
The const keyword is part of the functions signature which means that you can implement two similar methods, one which is called when the object is const, and one that isn't.
#include <iostream>
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What are the main performance differences between varchar and nvarchar SQL Server data types?
...he cost of migrating one application from varchar to nvarchar will be much more than the little bit of extra disk space you'll use in most applications.
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Understanding how recursive functions work
... I'm not too happy with thinking of it as a copy. I find that a more intuitive explanation is to differentiate the function itself (the code, what it does) and a function invocation (instantiation of that function) to which a stack frame/execution context is associated. The function doesn...