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What is the fastest way to compute sin and cos together?
I would like to compute both the sine and co-sine of a value together (for example to create a rotation matrix). Of course I could compute them separately one after another like a = cos(x); b = sin(x); , but I wonder if there is a faster way when needing both values.
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How to find the type of an object in Go?
... following snippet will print out the reflection type of a string, integer and float.
package main
import (
"fmt"
"reflect"
)
func main() {
tst := "string"
tst2 := 10
tst3 := 1.2
fmt.Println(reflect.TypeOf(tst))
fmt.Println(reflect.TypeOf(tst2))
fmt.Println(refle...
How can I get Docker Linux container information from within the container itself?
...
Aaaaand Docker 1.12: cat /proc/1/cgroup | grep 'docker/' | tail -1 | sed 's/^.*\///' | cut -c 1-12
– smets.kevin
Jul 27 '16 at 21:05
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How can I catch a ctrl-c event?
...;stdlib.h>
#include <stdio.h>
#include <unistd.h>
void my_handler(int s){
printf("Caught signal %d\n",s);
exit(1);
}
int main(int argc,char** argv)
{
struct sigaction sigIntHandler;
sigIntHandler.sa_handler = my_handler;
sigemptyset(&sigIntHand...
Getting MAC Address
...dress of a computer at run time. For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output. I don't like using a package that only works on one OS, and parsing the output of another program doesn't seem very elegant ...
Python: Ignore 'Incorrect padding' error when base64 decoding
...to normalise the data. Remove anything that's not a letter, digit / or +, and then add the padding.
– Martijn Pieters♦
Nov 20 '18 at 8:25
add a comment
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Batch file to copy files from one folder to another folder
... copy against the original. slower, but for the paranoid.
/h - copy system and hidden files.
/k - copy read-only attributes along with files. otherwise, all files become read-write.
/x - if you care about permissions, you might want /o or /x.
/y - don't prompt before overwriting existing files.
/z -...
Using Git, show all commits that are in one branch, but not the other(s)
... Note that git log foo..bar will show the commits between bar's latest and foo's latest, but not other commits missing from further back in time. To see everything in bar but not in foo, you should use @jimmyorr's solution.
– Paul A Jungwirth
Jul 10 '14 at ...
How to make part of the text Bold in android at runtime?
...new SpannableStringBuilder("HELLOO");
final StyleSpan bss = new StyleSpan(android.graphics.Typeface.BOLD); // Span to make text bold
final StyleSpan iss = new StyleSpan(android.graphics.Typeface.ITALIC); //Span to make text italic
sb.setSpan(bss, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE); // make f...
Can scripts be inserted with innerHTML?
...e script loads into the DOM, but it is never executed (at least in Firefox and Chrome). Is there a way to have scripts execute when inserting them with innerHTML ?
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