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What is the difference between JAX-RS and JAX-WS?

After reading a few articles about JAX-RS and JAX-WS, I had a few questions that I want to confirm? 5 Answers ...
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Should each and every table have a primary key?

I'm creating a database table and I don't have a logical primary key assigned to it. So, I'm thinking about leaving it without a primary key, but I'm feeling a bit guilty about it. Should I? ...
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Does the APNS device token ever change, once created?

...st ensures that only APNs generates the token which it will later honor, and it can assure itself that a token handed to it by a device is the same token that it previously provisioned for that particular device—and only for that device. If the user restores backup data to a new device ...
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Why do this() and super() have to be the first statement in a constructor?

...ct those args inline as you are doing, or pass them in to your constructor and then pass them to super: public MySubClassB extends MyClass { public MySubClassB(Object[] myArray) { super(myArray); } } If the compiler did not enforce this you could do this: public M...
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Cross compile Go on OSX?

I am trying to cross-compile a go app on OSX to build binaries for windows and linux. I have read everything what I could find on the net. Closest example that I have found has been published on (apart from many unfinished discussions on go-nuts mailing list): ...
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The differences between .build, .create, and .create! and when should they be used?

So I've been seeing people using .build , .create , and .create! within their controllers more and more lately. What's the difference from just using .new and passing the param'd object and then .save ? Are there pros and cons? Does using these other methods offer benefits? ...
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What is the difference between an IntentService and a Service? [duplicate]

Can you please help me understand what the difference between an IntentService and a Service is? 8 Answers ...
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How to clear gradle cache?

I'm trying to use Android Studio, and the first time I boot it up, it takes like 45 MINUTES to compile... If I don't quit the application, it is okay - each subsequent compilation/running the app will take around 45 seconds. ...
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When is it appropriate to use UDP instead of TCP? [closed]

Since TCP guarantees packet delivery and thus can be considered "reliable", whereas UDP doesn't guarantee anything and packets can be lost. What would be the advantage of transmitting data using UDP in an application rather than over a TCP stream? In what kind of situations would UDP be the better c...
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Multiple arguments vs. options object

...gLength(inputStr, 10); I think that code is quite readable the way it is and passing individual parameters is just fine. On the other hand, there are functions with calls like this: initiateTransferProtocol("http", false, 150, 90, null, true, 18); Completely unreadable unless you do some resea...