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What is Dependency Injection and Inversion of Control in Spring Framework?

...ted from our application code to the Spring container; this phenomenon is called IoC. Dependency Injection can be done by setter injection or constructor injection. share | improve this answer ...
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Show an image preview before upload

... HTML5 comes with File API spec, which allows you to create applications that let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. Part of the File API is the FileReader...
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Is 'float a = 3.0;' a correct statement?

...terals notation in specific scenarios. For performance reasons: Specifically, consider: float foo(float x) { return x * 0.42; } Here the compiler will emit a conversion (that you will pay at runtime) for each returned value. To avoid it you should declare: float foo(float x) { return x * 0.42...
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Run java jar file on a server as background process

...on [Service] ExecStart=/usr/bin/java -jar /web/server.jar User=user [Install] WantedBy=multi-user.target Step 4: Run your service as super user $ systemctl start whatever_you_want.service # starts the service $ systemctl enable whatever_you_want.service # auto starts the service $ systemctl ...
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Gradle to execute Java class (without modifying build.gradle)

...ATE :classes :execute I am BOO! mainClass is a property passed in dynamically at command line. classpath is set to pickup the latest classes. If you do not pass in the mainClass property, both of the approaches fail as expected. $ gradle execute FAILURE: Build failed with an exception. * Whe...
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How to share my Docker-Image without using the Docker-Hub?

...ers are stored by default under /var/lib/docker. While you could (theoretically) cherry pick files from there and install it in a different docker server, is probably a bad idea to play with the internal representation used by Docker. When you push your image, these layers are sent to the registry ...
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“Debug only” code that should run only when “turned on”

...piled with the DEBUG constant, // and when the person debugging manually sets the bool above to true. // It then stays for the rest of the session until they set it to false. } #endif // ... } Just to be complete, pragmas (preprocessor directives) are considered a bit of a kludge...
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gunicorn autoreload on source change

Finally I migrated my development env from runserver to gunicorn/nginx. 4 Answers 4 ...
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AngularJS - Access to child scope

...st dispatches events downwards. This might help you to keep things semantically correct. share | improve this answer | follow | ...
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Ruby: kind_of? vs. instance_of? vs. is_a?

...metimes. Think @honda.kind_of? Car and @person.is_a? Administrator, Ruby's all about the aesthetics. In fact, notice the grammatical error... with active support you can write @person.is_an? Administrator :)... That might have made it into Ruby core by now, actually. – rfunduk ...