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Virtual functions and performance - C++
...we work with. The test I ran was to make a simple 4d vector class with get/set functions
class TestVec
{
float x,y,z,w;
public:
float GetX() { return x; }
float SetX(float to) { return x=to; } // and so on for the other three
}
Then I set up three arrays each containing 1024 of th...
Sanitizing strings to make them URL and filename safe?
... * $force_lowercase - Force the string to lowercase?
* $anal - If set to *true*, will remove all non-alphanumeric characters.
*/
function sanitize($string, $force_lowercase = true, $anal = false) {
$strip = array("~", "`", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "_", "=",...
What is the C++ function to raise a number to a power?
...
Use the pow(x,y) function: See Here
Just include math.h and you're all set.
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How should I detect unnecessary #include files in a large C++ project?
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While it won't reveal unneeded include files, Visual studio has a setting /showIncludes (right click on a .cpp file, Properties->C/C++->Advanced) that will output a tree of all included files at compile time. This can help in identifying files that shouldn't need to be included.
You...
Hidden features of Perl?
...rite features in Perl is using the boolean || operator to select between a set of choices.
$x = $a || $b;
# $x = $a, if $a is true.
# $x = $b, otherwise
This means one can write:
$x = $a || $b || $c || 0;
to take the first true value from $a, $b, and $c, or a default of 0 otherwise.
In P...
Android: Access child views from a ListView
...
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
View v;
int count = parent.getChi...
Can you call Directory.GetFiles() with multiple filters?
...omehow skipped over that github link. Maybe i should adapt my screen color settings :)
– BatteryBackupUnit
Jul 23 '14 at 18:46
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What's the best way to break from nested loops in JavaScript?
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Just like Perl,
loop1:
for (var i in set1) {
loop2:
for (var j in set2) {
loop3:
for (var k in set3) {
break loop2; // breaks out of loop3 and loop2
}
}
}
as defined in EMCA-262 section 12.12. [MDN D...
Set Django IntegerField by choices=… name
...sociated with human readable names. Is there in Django a convenient way to set these fields by the human readable name instead of the value?
...
How do you get git to always pull from a specific branch?
...erge in the changes from the remote master branch.
I'm not sure why this setup would've been removed from your configuration, though. You may have to follow the suggestions that other people have posted, too, but this may work (or help at least).
If you don't want to edit the config file by hand,...