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Maven: missing net.sf.json-lib

... Looking at the maven-central repo, you need to specify a classifier for this dependency. Either jdk13 or jdk15, like this: <dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId&g...
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Wrapping null-returning method in Java with Option in Scala?

Suppose I have a method session.get(str: String): String but you don't know whether it will return you a string or a null, because it comes from Java. ...
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How to pass parameters to a view

I have a series of buttons which when clicked display a popup menu positioned just below the button. I want to pass the position of button to the view. How can I do that? ...
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Join a list of strings in python and wrap each string in quotation marks

...'hello', 'world', 'you', 'look', 'nice'] >>> ', '.join('"{0}"'.format(w) for w in words) '"hello", "world", "you", "look", "nice"' share | improve this answer | fol...
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Maintaining the final state at end of a CSS3 animation

I'm running an animation on some elements that are set to opacity: 0; in the CSS. The animation class is applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things). ...
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Spring Boot Rest Controller how to return different HTTP status codes?

I am using Spring Boot for a simple REST API and would like to return a correct HTTP statuscode if something fails. 6 Answe...
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What is causing this ActiveRecord::ReadOnlyRecord error?

... this prior question, which was answered. I actually discovered I could remove a join from that query, so now the working query is ...
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What is an SSTable?

In BigTable/GFS and Cassandra terminology, what is the definition of a SSTable? 4 Answers ...
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Python serialization - Why pickle?

...s a way to 'store' a Python Object in a way that does respect Object programming - different from an output written in txt file or DB. ...
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What does Provider in JAX-RS mean?

Could anyone explain to me what a JAX-RS Provider is and what ‘@Provider’ annotation does? I have been reading documentation but I cant get it. If there are resource classes that service the incoming requests, what do Providers do? How are they different from singleton resource classes when I ...