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When should I use RequestFactory vs GWT-RPC?

... The big difference between GWT RPC and RequestFactory is that the RPC system is "RPC-by-concrete-type" while RequestFactory is "RPC-by-interface". RPC is more convenient to get started with, because you write fewer lines of code and use the same class on both...
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What's the difference between a single precision and double precision floating point operation?

What is the difference between a single precision floating point operation and double precision floating operation? 11 Answ...
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How many double numbers are there between 0.0 and 1.0?

... 52-bit fraction; between any two adjacent powers of two (inclusive of one and exclusive of the next one), there will therefore be 2 to the 52th power different doubles (i.e., 4503599627370496 of them). For example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, and ex...
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What to learn for making Java web applications in Java EE 6? [closed]

...al, my advice would be to start with Java EE 6 only. So, grab GlassFish v3 and either get the book Beginning Java EE 6 Platform with GlassFish 3: From Novice to Professional or follow the Java EE 6 tutorial. In my opinion, the book (that I've started to read so I know what I'm talking about) provide...
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What's the difference between a Future and a Promise?

What's the difference between Future and Promise ? They both act like a placeholder for future results, but where is the main difference? ...
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Difference between “or” and || in Ruby? [duplicate]

What's the difference between the or and || operators in Ruby? Or is it just preference? 8 Answers ...
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Compiled vs. Interpreted Languages

I'm trying to get a better understanding of the difference. I've found a lot of explanations online, but they tend towards the abstract differences rather than the practical implications. ...
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Could someone explain the pros of deleting (or keeping) unused code?

...moved: For anyone new working on a project, they not only have to understand the working code, they have to understand unused material also. This is wasted time and creates confusion. There is a danger that at sometime someone will make a change which inadvertently involve the 'dormant' code and...
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Trust Store vs Key Store - creating with keytool

I understand that the keystore would usually hold private/public keys and the trust store only public keys (and represents the list of trusted parties you intend to communicate with). Well, that's my first assumption, so if that's not correct, I probably haven't started very well... ...
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How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?

I was looking at the Proxy Pattern, and to me it seems an awful lot like the Decorator, Adapter, and Bridge patterns. Am I misunderstanding something? What's the difference? Why would I use the Proxy pattern versus the others? How have you used them in the past in real world projects? ...