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Is there a use-case for singletons with database access in PHP?
... second monitor, a second database, a second server--whatever.
When this happens, if you have used a static class you're in for a much worse refactor than if you had used a singleton. A singleton is an iffy pattern in itself, but it converts fairly easily to an intelligent factory pattern--can eve...
How to execute AngularJS controller function on page load?
...o NOT use ng-init for that. However imo it depends on architecture of your app.
I used ng-init when I wanted to pass a value from back-end into angular app:
<div data-ng-controller="myCtrl" data-ng-init="init('%some_backend_value%')"></div>
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Mongoose indexing in production code
...tra when you define (compile) your model. I do that when I first start the app. Now the hard think is to decide to drop all indexes and recreate them, in case you schema changes.
– Moss
Jul 31 '13 at 12:15
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Creating a blurring overlay view
In the Music app of the new iOS, we can see an album cover behind a view that blurs it.
25 Answers
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Calculate distance between two latitude-longitude points? (Haversine formula)
...very much for all this. I used the following code in my Objective-C iPhone app:
const double PIx = 3.141592653589793;
const double RADIO = 6371; // Mean radius of Earth in Km
double convertToRadians(double val) {
return val * PIx / 180;
}
-(double)kilometresBetweenPlace1:(CLLocationCoordina...
Why should I learn Lisp? [closed]
...embling maps in other languages, but much more flexible) to choose what an appropriate response would be. I also wrote a routine to solve a 3x3 slide puzzle (an algorithm which could easily be extended to larger slide puzzles).
In summary, learning Lisp (or Scheme) may not yield many practical app...
how to unit test file upload in django
In my django app, I have a view which accomplishes file upload.The core snippet is like this
10 Answers
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Swift: #warning equivalent
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In the future, Apple devs may very well release a //WARNING: landmark, or provide the functionality for another named landmark.
To envoke this functionality with Swift in Xcode today however, you could do the following as outlined by Ben D...
vs
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Today I had an issue where Korean symbols weren't appearing in IE11. Dropping the short syntax in favour of the longer syntax fixed the issue. I don't know if this is due to some kind of server config though or if it is an issue with IE11 and the charset. The exact symbol co...
The current SynchronizationContext may not be used as a TaskScheduler
...and doesn't actually continue on the same thread.
– Sapph
Apr 9 '16 at 21:29
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