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When should I use OWIN Katana?
... OWIN.
Without OWIN, the asp.net bits are coupled to the way IIS communicates with the application. OWIN abstracts web servers and framework components. That means that your application code will now be aware of the OWIN interface, but not of the webserver that is serving the request.
In return,...
Is gcc 4.8 or earlier buggy about regular expressions?
...d is the GCC major version
Testing
You can test it with GCC like this:
cat << EOF | g++ --std=c++11 -x c++ - && ./a.out
#include <regex>
#if __cplusplus >= 201103L && \
(!defined(__GLIBCXX__) || (__cplusplus >= 201402L) || \
...
Why is require_once so bad to use?
...
I'm fairly sure you're right Bobby but I'm not advocating the defines over _once. It's just an option. The time it would take to interpret the code might even make it marginally slower but, that said, I don't know how thorough the internal method is. It might do extra work to...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...sum
$ uname -mov
#1 SMP Mon May 13 12:16:08 EDT 2019 ppc64le GNU/Linux
$ cat /proc/cpuinfo
processor : 0
cpu : POWER9, altivec supported
clock : 2166.000000MHz
revision : 2.2 (pvr 004e 1202)
$ ls -l linux-master.tar
-rw-rw-r-- 1 x x 829685760 Jan 29 14:30 linux-...
How do function pointers in C work?
...onditional branches on the CPU features everywhere. Then you can do complicated logic about deciding that well, even though this CPU supports pshufb, it's slow, so the earlier implementation is still faster. x264/x265 use this extensively, and are open source.
– Peter Cordes
...
How to implement a rule engine?
... fast executable code (using Expression trees) and does not need any complicated switch statements:
(Edit : full working example with generic method)
public Func<User, bool> CompileRule(Rule r)
{
var paramUser = Expression.Parameter(typeof(User));
Expression expr = BuildExpr(r, paramUs...
Evenly distributing n points on a sphere
...Alternatively, building on the other answer here (and using Python):
> cat ll.py
from math import asin
nx = 4; ny = 5
for x in range(nx):
lon = 360 * ((x+0.5) / nx)
for y in range(ny):
midpt = (y+0.5) / ny ...
What does the git index contain EXACTLY?
...e85
|-- info
`-- pack
And if we get the content of the only object:
git cat-file -p 78981922613b2afb6025042ff6bd878ac1994e85
We get a. This indicates that:
the index points to the file contents, since git add b created a blob object
it stores the metadata in the index file, not in a tree obje...
Open new Terminal Tab from command line (Mac OS X)
...
Try this:
osascript -e 'tell application "Terminal" to activate' -e 'tell application "System Events" to tell process "Terminal" to keystroke "t" using command down'
share
|...
Execution of Python code with -m option or not
...st/foo/bar
$ touch test/foo/__init__.py
$ touch test/foo/bar/__init__.py
$ cat << EOF > test/foo/bar/baz.py
> if __name__ == "__main__":
> print __package__
> print __name__
>
> EOF
$ PYTHONPATH=test python test/foo/bar/baz.py
None
__main__
$ PYTHONPATH=test python...