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How expensive is RTTI?
...;typeid()
5) 14,261,000 Ticks (~23 Seconds) - typeid() with extra variable allocations.
So the conclusion would be:
For simple cast cases without optimisation typeid() is more than twice faster than dyncamic_cast.
On a modern machine the difference between the two is about 1 nanosecond (a milliont...
How to check if the string is empty?
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s.strip() allocates a new string, which is pure waste. Use string.isspace()
– Clément
Jun 22 at 15:27
add a ...
Nginx reverse proxy causing 504 Gateway Timeout
...se fastcgi_read_timeout and proxy_read_timeout to make sure that nginx and php-fpm did not timeout.
To increase time limit for only one site then you can edit in vim /etc/nginx/sites-available/example.com
location ~ \.php$ {
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/va...
Store a closure as a variable in Swift
...eComplete) onHideComplete ();
}
@end
PopupView * popupView = [[PopupView alloc] init]
popupView.onHideComplete = ^() {
...
}
Swift
class PopupView: UIView {
var onHideComplete: (() -> Void)?
@IBAction func hideButtonDidTouch(sender: AnyObject) {
// Do something
....
Convert timestamp to date in MySQL query
... up as 2018-Nov-6. You may be looking for '%Y-%m-%d' as you'd format it in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06
– Chris S.
Nov 7 '18 at 9:19
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How do I get a YouTube video thumbnail from the YouTube API?
If I have a YouTube video URL, is there any way to use PHP and cURL to get the associated thumbnail from the YouTube API?
3...
How would you access Object properties from within an object method? [closed]
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What if you add some sort of boolean to the getter like: PHP: public function getName($outsideCall = true){ if($outsideCall){ $this->incrementNameCalled(); } return $this->name; } and then from within the Object itself, if you called get name, you could keep ...
img tag displays wrong orientation
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You can use the GD library in PHP.
– i-CONICA
Jul 10 '14 at 7:47
5
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How could the UNIX sort command sort a very large file?
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Probably sort -S pre-allocates the memory for the sort process before even reading the contents of file.
– Fred Gannett
Oct 16 '17 at 10:07
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Remove element of a regular array
... another array" - per the linked documentation, Array.Resize actually does allocate a new array behind the scenes, and copies the elements from the old array to the new one. Still, I like the conciseness of this solution.
– Jon Schneider
Sep 11 '14 at 14:48
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