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How to get all possible combinations of a list’s elements?
...a list with 15 numbers in, and I need to write some code that produces all 32,768 combinations of those numbers.
27 Answer...
After array_filter(), how can I reset the keys to go in numerical order starting at 0
...
Salman A
220k7676 gold badges382382 silver badges479479 bronze badges
answered Aug 4 '10 at 0:59
Daniel VandersluisDaniel Vandersl...
What is more efficient? Using pow to square or just multiply it with itself?
... elapsed << " "; \
\
return x; \
}
TEST(1, b)
TEST(2, b*b)
TEST(3, b*b*b)
TEST(4, b*b*b*b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<loops; ++i)
...
How to get a pixel's x,y coordinate color from an image?
...
answered Jan 5 '12 at 23:54
Brian Nickel♦Brian Nickel
24.5k55 gold badges7979 silver badges107107 bronze badges
...
Define a lambda expression that raises an Exception
...7,'|\0\0\202\1\0',(),(),('x',),'','',1,''),{}
)(Exception())
And a python3 strong stomach solution:
type(lambda: 0)(type((lambda: 0).__code__)(
1,0,1,1,67,b'|\0\202\1\0',(),(),('x',),'','',1,b''),{}
)(Exception())
Thanks @WarrenSpencer for pointing out a very simple answer if you don't ca...
How do I use arrays in C++?
...
305
Arrays on the type level
An array type is denoted as T[n] where T is the element type and n i...
Make Div overlay ENTIRE page (not just viewport)?
...pression that the entire body is darkened.
Example: http://jsbin.com/okabo3/edit
div.fadeMe {
opacity: 0.5;
background: #000;
width: 100%;
height: 100%;
z-index: 10;
top: 0;
left: 0;
position: fixed;
}
<body>
<div class="fadeMe">...
Path to Powershell.exe (v 2.0)
...
I believe it's in C:\Windows\System32\WindowsPowershell\v1.0\. In order to confuse the innocent, MS kept it in a directory labeled "v1.0". Running this on Windows 7 and checking the version number via $Host.Version (Determine installed PowerShell version) show...
Performance of FOR vs FOREACH in PHP
...rotime(true) - $start, " Seconds\n";
And the results:
Completed in 0.0073502063751221 Seconds
Completed in 0.0019769668579102 Seconds
Completed in 0.0011849403381348 Seconds
Completed in 0.00111985206604 Seconds
So if you're modifying the array in the loop, it's several times faster to use refe...