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How expensive is RTTI?
..., on many platforms (Linux, BSD and maybe embedded platforms, but not mingw32). If you know you'll always be on a blessed platform, RTTI is very close to free.
Gritty details:
GCC prefers to use a particular "vendor-neutral" C++ ABI[1], and always uses this ABI for Linux and BSD targets[2]. For pl...
Index of Currently Selected Row in DataGridView
... cell
– Luke Marlin
Apr 8 '13 at 13:32
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How to show disable HTML select option in by default?
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answered Apr 6 '18 at 11:32
c0degeasc0degeas
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Imply bit with constant 1 or 0 in SQL Server
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gbngbn
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Display names of all constraints for a table in Oracle SQL
...e?
– David Fletcher
Dec 8 '19 at 16:32
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How to turn on (literally) ALL of GCC's warnings?
...ing would include -Wdouble-promotion which is only relevant on CPUs with a 32-bit single-precision floating-point unit which implements float in hardware, but emulates double in software. Doing calculations as double would use the software emulation and be slower. That's relevant for some embedded...
How to Append in javascript? [duplicate]
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qwertymkqwertymk
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Error renaming a column in MySQL
...on
– Mr. Deathless
Jan 21 '16 at 18:32
@Dejan thanks and this is really annoying, why require a type when you can't sp...
Size of Matrix OpenCV
...need to use
int thisSizes[3] = {2, 3, 4};
cv::Mat mat3D(3, thisSizes, CV_32FC1);
// mat3D.size tells the size of the matrix
// mat3D.size[0] = 2;
// mat3D.size[1] = 3;
// mat3D.size[2] = 4;
Note, here 2 for z axis, 3 for y axis, 4 for x axis.
By x, y, z, it means the order of the dimensions. x ...
multiple packages in context:component-scan, spring config
... biology.infobiology.info
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