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'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
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Not only did I use set brackets, but I did say sub_set_. :-) Unless you employ weird things like Kuratowski's definition, you can't be a subset of an ordered pair. :-] (TypeError: '<=' not supported between instances of 'set' and 'tuple', Python would say.;)
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What is the fastest way to compute sin and cos together?
...OR A PARTICULAR PURPOSE.
$ cat main.c
#include <math.h>
struct Sin_cos {double sin; double cos;};
struct Sin_cos fsincos(double val) {
struct Sin_cos r;
r.sin = sin(val);
r.cos = cos(val);
return r;
}
$ gcc -c -S -O3 -ffast-math -mfpmath=387 main.c -o main.s
$ cat main.s
.tex...
Verifying that a string contains only letters in C#
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Only letters, numbers and underscore:
Regex.IsMatch(input, @"^[a-zA-Z0-9_]+$");
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How to easily resize/optimize an image size with iOS?
...r(portrait) on right side plz give me solution
– Nag_iphone
Oct 24 '11 at 11:17
1
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Swift - Convert to absolute value
...alue.magnitude) // prints: 5
#2. Get absolute value of an Int from abs(_:) method
Swift has a global numeric function called abs(_:) method. abs(_:) has the following declaration:
func abs<T>(_ x: T) -> T where T : Comparable, T : SignedNumeric
Returns the absolute value of the g...
Is null reference possible?
...act of dereferencing, here's the link: open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1102
– Johannes Schaub - litb
Dec 6 '10 at 9:03
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Retrieve the position (X,Y) of an HTML element relative to the browser window
...n every circumstances that I've tried.
function getOffset( el ) {
var _x = 0;
var _y = 0;
while( el && !isNaN( el.offsetLeft ) && !isNaN( el.offsetTop ) ) {
_x += el.offsetLeft - el.scrollLeft;
_y += el.offsetTop - el.scrollTop;
el = el.offsetPare...
Chain-calling parent initialisers in python [duplicate]
...Python 3 includes an improved super() which allows use like this:
super().__init__(args)
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How to specify new GCC path for CMake
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Do not overwrite CMAKE_C_COMPILER, but export CC (and CXX) before calling cmake:
export CC=/usr/local/bin/gcc
export CXX=/usr/local/bin/g++
cmake /path/to/your/project
make
The export only needs to be done once, the first time you configure the...
Redirecting Output from within Batch file
...olution offered by @dbenham. So for example, this:
@echo off
> filename_prefix-%DATE:~-4%-%DATE:~4,2%-%DATE:~7,2%_%time:~0,2%%time:~3,2%%time:~6,2%.log (
echo Your Name Here
echo Beginning Date/Time: %DATE:~-4%-%DATE:~4,2%-%DATE:~7,2%_%time:~0,2%%time:~3,2%%time:~6,2%.log
REM do some stuff here
...