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Determining complexity for recursive functions (Big O notation)
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The time complexity, in Big O notation, for each function:
int recursiveFun1(int n)
{
if (n <= 0)
return 1;
else
return 1 + recursiveFun1(n-1);
}
This function is being called recursively n times before reaching the base case so its O(n...
ViewPager.setOffscreenPageLimit(0) doesn't work as expected
...h the consequences myself. A default empty fragment could be a placeholder for instance until ones fragment has loaded. All of which could take place off the UI thread. Anyway I haven't thought about it much.
– HGPB
Jul 10 '13 at 17:16
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Is there a “null coalescing” operator in JavaScript?
...herwise returns its left-hand-side operand.
Please check compatibility before using it.
The JavaScript equivalent of the C# null coalescing operator (??) is using a logical OR (||):
var whatIWant = someString || "Cookies!";
There are cases (clarified below) that the behaviour won't match tha...
Sound effects in JavaScript / HTML5
..."); // buffers automatically when created
snd.play();
There's no support for mixing in current version of the spec.
To play same sound multiple times, create multiple instances of the Audio object. You could also set snd.currentTime=0 on the object after it finishes playing.
Since the JS cons...
jQuery How to Get Element's Margin and Padding?
Just wondering - how using jQuery - I can get an elements formatted total padding and margin etc ? i.e. 30px 30px 30px 30px or 30px 5px 15px 30px etc
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unable to start mongodb local server
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sudo service mongodb stop worked for me on Ubuntu 14.10.
– Joe Corneli
Jun 17 '15 at 16:50
1
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WAMP/XAMPP is responding very slow over localhost
I don't know what the problem is. WAMP was very slow, so I reformatted my computer and installed WAMP. Still, accessing localhost is very, very slow, and sometimes it doesn't even load at all. I even removed it and replaced it with XAMPP, but I still got the same result. What might possibly be the p...
Notification passes old Intent Extras
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You are sending the same request code for your pending intens.
Change this:
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
To:
PendingIntent contentIntent = PendingIntent.getActivity(context, UNIQUE_INT_PER_CALL, n...
Labels for radio buttons in rails form
My question is similar to this one
but for a Rails app.
5 Answers
5
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How can I ensure that a division of integers is always rounded up?
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UPDATE: This question was the subject of my blog in January 2013. Thanks for the great question!
Getting integer arithmetic correct is hard. As has been demonstrated amply thus far, the moment you try to do a "clever" trick, odds are good that you've made a mistake. And when a flaw is found, c...