TAILIEUCHUNG - HandBooks Professional Java-C-Scrip-SQL part 21

Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 21', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Breaking It Down That s a 30-minute tour through Ruby. I m not saying that Ruby is the next great language but rather that Ruby makes some of the hard things in Java easy. More and more of the top independent consultants are looking for ways to make more money working in Ruby or other languages that are more dynamic. The Java community is spending an amazing amount of money and brainpower on making Java more dynamic. Dependency injection and aspect-oriented programming are groundbreaking ideas for Java and they are only now getting serious commercial traction. For Java developers these ideas represent better transparency and simpler application development. . Collapsing Under the Weight of Abstraction My playtime in Ruby makes another more powerful idea clearer. As we stretch Java in increasingly unnatural directions there s a cost. AOP and dependency injection are near-trivial exercises in Ruby but they force Java developers to learn new programming models deal with XML and introduce increasingly complex syntax. With each new metaprogramming concept that we bake into Java it s looking more and more like all of that complexity is trying to drive us somewhere. The net effect is to push Java further and further into the enterprise niche and make it less and less accessible to the average Joe. Contrast that situation with Ruby where dependency injection and AOP don t consume your focus you re free to apply those ideas in spots right where you need them. I do think that Ruby with Rails is a near-ideal solution for that sweet spot that we ve pushed a web-based frontend for a relational database. I ve already said that I m using Ruby in a commercial application. My customer demanded productivity and a price point that I couldn t achieve in any other way. I also still recommend Java to many of my clients. They need complex frameworks that Ruby does not yet support or they depend on a core set of developers that have already been trained or they have so much .

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