Processing a list of A This approach would not work in Java. It relies on the fact that we can get the actual runtime value of T using the typeof operator. Since Java’s type erasure replaces T with Object, there’s no way we can determine the type of items in the list. We could try to iterate through them and check their types using the getClass() method, but, because our list contains a mixture of different classes, we would need to walk up the inheritance tree and calculate a common ancestor for them. This could get tricky if the classes implemented the same interfaces. A better approach, would be to define an additional Class parameter.

Foto ne mogu pomestitj, tak kak prosto ne znaju kak eto sdelatj.

We can then use it to explicitly tell the method what type we’re processing. Process ( list, A. Class ); Adding the extra information in this case might not seem like a huge problem, but having to pass the type explicitly is a bit unintuitive since the method already has a type parameter. From C# to Java Over the 5 years I was using C# I really got used to the convenience offered by these and other language features. Sap erp 60 keygen. At some point I decided it was time to change jobs and found an interesting position at Allegro. The primary language required was Java.

Because of that, I decided to refresh my skills a bit and started a small project. I must say, transitioning back to Java wasn’t as smooth as moving to C# earlier. The language felt way less expressive. It seemed I needed to do much more to get the same result. But that was before I tried. Spring I never really used Spring before I switched to C#.

I wanted to give it a try and was very impressed. Without any real knowledge of the framework I managed to get a simple REST service running within a few minutes. This ease of configuration is something.NET framework really lacks.

The acronym stands for Windows Communication Foundation. It’s a framework for building services-oriented applications. It handles all the details of sending messages over the network, supporting multiple message patterns (like a request-response model, or a duplex channel), different transport protocols, encodings, and has a host of other features.

It’s quite powerful but the drawback is it relies on a rather complicated XML configuration file. It’s not easy to get everything set up correctly without doing some research upfront. In Spring the XML configuration file is optional. The more convenient method is to configure the application in code by adding annotations and registering bean classes. Spring also decreases the entry cost by hiding all of the configuration settings you don’t need at first. Sets some sensible defaults for you. Later, if you need to, you can always configure them the way you want, but until then, the framework takes care of everything.

Another thing I liked about Spring was the built-in dependency container. It requires the user to just add a few annotations on classes and the framework takes care of wiring them together. In general, I really liked how Spring makes use of annotations. They exist in C# as well but are nowhere near as utilised. I was surprised to see how easy it was to add validation for input messages of my service or to gather metrics for endpoints.

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