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Why doesn't String switch statement support a null case?
...h { // 1
2236: 28
default: 59
}
28: aload_3
29: ldc #22 // String Ea
31: invokevirtual #24 // Method java/lang/String.equals:(Ljava/lang/Object;)Z
34: ifne 49
37: aload_3
38: ldc #2...
How to get current working directory in Java?
...e initialized". This is probably what you want. to find out where the java command was issued, in your case in the directory with the files to process, even though the actual .jar file might reside somewhere else on the machine. Having the directory of the actual .jar file isn't that useful in most ...
Good tutorials on XMPP? [closed]
... at some open-source XMPP servers, and am familiar with the official page http://xmpp.org/ . But thus far I've not found anything in between " The Extensible Messaging and Presence Protocol (XMPP) is an open technology for real-time communication " and a list of XEP specifications. For instance art...
What is the use of the @ symbol in PHP?
...l be ignored.
If you have set a custom error handler function with set_error_handler() then it will still get called, but this custom error handler can (and should) call error_reporting() which will return 0 when the call that triggered the error was preceded by an @...
...
A good book for learning D3.js [closed]
...book is now available online for free, along with embedded jsbin examples.
http://chimera.labs.oreilly.com/books/1230000000345/index.html
So if you are looking for a "book", this would be a great start.
Another great place to start is the set of tutorials - you could almost think of them as a mini...
Understanding the Rails Authenticity Token
... are logged into), and ask to delete your account, by sending a request to http://serviceA.com/close_account. This is what is known as CSRF (Cross Site Request Forgery).
If service A is using authenticity tokens, this attack vector is no longer applicable, since the request from service B would not...
Good beginners tutorial to socket.io? [closed]
...art with Socket.IO I suggest you read first the example on the main page:
http://socket.io/
On the server side, read the "How to use" on the GitHub source page:
https://github.com/Automattic/socket.io
And on the client side:
https://github.com/Automattic/socket.io-client
Finally you need to re...
Maven 3 warnings about build.plugins.plugin.version
...shown in output.
UPDATE If you want to select among list of versions, use http://search.maven.org/ or http://mvnrepository.com/ Note that your favorite Java IDE must have Maven package search dialog. Just check docs.
SUPER UPDATE I also use:
$ mvn dependency:tree
$ mvn dependency:list
$ mvn depen...
A worthy developer-friendly alternative to PayPal [closed]
...is based entirely on REST — you can even use curl to charge cards:
curl https://api.stripe.com/v1/charges
-u <YOUR_API_KEY>:
-d amount=400
-d currency=usd
-d "description=Charge for user@example.com"
-d "card[number]=4242424242424242"
-d "card[exp_month]=12"
-d "card[ex...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...re readable.
Using the sample data provided:
>>> %timeit df3.reset_index().drop_duplicates(subset='index', keep='first').set_index('index')
1000 loops, best of 3: 1.54 ms per loop
>>> %timeit df3.groupby(df3.index).first()
1000 loops, best of 3: 580 µs per loop
>>> %tim...