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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
...t z = add(x, y);
sum += z;
}
return sum;
}
int main(int , char* argv[]) {
int result = work(*argv[1], *argv[2]);
return result;
}
and compiled as: g++ -O2 add.cpp main.cpp.
gcc won't inline add()!
That's all, it's that easy to unintendedly create hotspots l...
IEnumerable vs List - What to Use? How do they work?
...the internal workings. List is an implementation of IList and as such has extra functionality on top of those in IList (e.g. Sort, Find, InsertRange). If you force yourself to use IList over List, you loose these methods that you may require
– Jonathan Twite
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How do I automatically update a timestamp in PostgreSQL
... Says so in the Postgres documentation of the types. Varchar has extra CPU cycles to check for the constraint, which doesn't happen on TEXT.
– Rahly
Jun 21 '17 at 15:50
3...
Best way to combine two or more byte arrays in C#
...sion requires creating an array of the byte arrays first, which introduces extra inefficiency.
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git rebase without changing commit timestamps
... one of the core members applies the patch, both of you get credit.
To be extra clear, in this instance, as Olivier comments:
the --ignore-date does the opposite of what I was trying to achieve!
Namely, it erases the author's timestamp and replace them with the commits timestamps!
So the right an...
What is HTML5 ARIA?
...dern web applications. Before ARIA, the browser had no way to expose this extra richness to the accessibility API or AT. The classic example of this issue is adding a click handler to an image. It creates what appears to be a clickable button to a mouse user, but is still just an image to a keybo...
Select elements by attribute in CSS
...r values with CSS only..
Attributes selectors allows you play around some extra with id and class attributes
Here is an awesome read on Attribute Selectors
Fiddle
a[href="http://aamirshahzad.net"][title="Aamir"] {
color: green;
text-decoration: none;
}
a[id*="google"] {
color: r...
Ruby max integer
...
@Matthias An extra bit is used to mark the value as an integer (as opposed to a pointer to an object).
– Matthew Crumley
Mar 8 '12 at 18:53
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How do I “source” something in my .vimrc file?
...I know just put everything in _vimrc.
A good practice is to keep all your extra files (plugins, colorschemes, snippets ...) in a separate (your own) vimfiles directory (which you can take with you).
If you do
:help vimfiles
vim will tell your vimfiles directory should be located. It depends som...
Django admin: how to sort by one of the custom list_display fields that has no database field
... This certainly should work, but can't mark it as accepted due to extra DB field involved. Also note missing .count() at the end of query-set line.
– mike_k
Feb 2 '10 at 17:08
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