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Wolfram's Rule 34 in XKCD [closed]
... 0 1
6: 1 1 0
7: 1 1 1
If you're evaluating a stage in a cellular automaton (CA) that follows rule 2, then whenever a three-bit string matches rule 2's configuration, the center bit becomes (or stays, in this case) true on the next iteration.
A CA...
How can I read a text file in Android?
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If you have one empty row in your txt doc, this parser will stop working! The solution is to admit having this empty rows: while ((line = br.readLine()) != null) { if(line.length() > 0) { //do your stuff } ...
Callback on CSS transition
Is it possible to get a notification (like callback) when a CSS transition has been completed?
5 Answers
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What is the difference between atomic / volatile / synchronized?
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You are specifically asking about how they internally work, so here you are:
No synchronization
private int counter;
public int getNextUniqueIndex() {
return counter++;
}
It basically reads value from memory, increments it and pu...
Android map v2 zoom to show all the markers
...(bounds, padding);
Finally move the map:
googleMap.moveCamera(cu);
Or if you want an animation:
googleMap.animateCamera(cu);
That's all :)
Clarification 1
Almost all movement methods require the Map object to have passed the layout process. You can wait for this to happen using the addOnGl...
How to avoid “Permission denied” when using pip with virtualenv
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if I want to create it in /opt which requires sudo, I think virtualenv won't install without sudo.
– Umair A.
Dec 12 '13 at 13:10
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How do I get user IP address in django?
...quest):
x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
if x_forwarded_for:
ip = x_forwarded_for.split(',')[0]
else:
ip = request.META.get('REMOTE_ADDR')
return ip
Make sure you have reverse proxy (if any) configured correctly (e.g. mod_rpaf installed for...
SQL Switch/Case in 'where' clause
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This is will give a slightly different result as the Case statement exits after a condition is met - but the OR syntax will evaluate all the possibilities
– tember
May 12 '15 at 18:27
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How do I disable text selection with CSS or JavaScript? [duplicate]
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Note that it's a non-standard feature (i.e. not a part of any specification). It is not guaranteed to work everywhere, and there might be differences in implementation among browsers and in the future browsers can drop support for it.
More information can be found in Mozilla Developer Ne...
Django filter versus get for single object?
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get() is provided specifically for this case. Use it.
Option 2 is almost precisely how the get() method is actually implemented in Django, so there should be no "performance" difference (and the fact that you're thinking about it indicates you're...