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What is choice_set in this Django app tutorial?
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Thanks. I know much more now. Isn't choice_set a "Manager" ? (that can return an instance of class QuerySet). Or is it the same thing?
– Peter Mortensen
Jan 12 '10 at 12:41
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Determining if a number is either a multiple of ten or within a particular set of ranges
... dense, and you might be better off just listing the options explicitly.
Now that you've given a better idea of what you are doing, I'd write the second one as:
int getRow(int num) {
return (num - 1) / 10;
}
if (getRow(num) % 2 == 0) {
}
It's the same logic, but by using the ...
MYSQL OR vs IN performance
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I needed to know this for sure, so I benchmarked both methods. I consistenly found IN to be much faster than using OR.
Do not believe people who give their "opinion", science is all about testing and evidence.
I ran a loop of 1000x the ...
Make an HTTP request with android
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Note: The Apache HTTP Client bundled with Android is now deprecated in favor of HttpURLConnection. Please see the Android Developers Blog for more details.
Add <uses-permission android:name="android.permission.INTERNET" /> to your manifest.
You would then retrieve a web...
Check if string matches pattern
...tch one or more digits
() group things (and also return things... but for now just think of them grouping)
+ selects 1 or more
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Detecting programming language from a snippet
...e snippet into words. Then you compare the occurences of these words with known snippets, and compute the probability that this snippet is written in language X for every language you're interested in.
http://en.wikipedia.org/wiki/Bayesian_spam_filtering
If you have the basic mechanism then it's v...
psql: FATAL: Peer authentication failed for user “dev”
... cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off) You are now connected to database "glossary" as user "john" on host "localhost" at port "5432". it worked.
– look
Dec 4 '16 at 2:26
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Visual Studio: How do I show all classes inherited from a base class?
... and select Base Types, which will take you to ActionResult, which you can now right-click on and select Derived Types. (If you have no type that derives from ActionResult then you could work your way back to System.Object and then down to ActionResult.)
– yoyo
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$location / switching between html5 and hashbang mode / link rewriting
...$delegate) {
$delegate.history = false;
return $delegate;
});
I will now explain this in more detail:
Hashbang Mode
Configuration:
$routeProvider
.when('/path', {
templateUrl: 'path.html',
});
$locationProvider
.html5Mode(false)
.hashPrefix('!');
This is the case when you need t...
Java synchronized method lock on object, or method?
... }
}
I think if the Java designers knew then what is understood now about synchronization, they would not have added the syntactical sugar, as it more often than not leads to bad implementations of concurrency.
sh...