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When should a class be Comparable and/or Comparator?
I have seen classes which implement both Comparable and Comparator . What does this mean? Why would I use one over the other?
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Tables instead of DIVs [duplicate]
Under what conditions should you choose tables instead of DIVs in HTML coding?
24 Answers
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Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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What's the best way to model recurring events in a calendar application?
I'm building a group calendar application that needs to support recurring events, but all the solutions I've come up with to handle these events seem like a hack. I can limit how far ahead one can look, and then generate all the events at once. Or I can store the events as repeating and dynamically ...
App restarts rather than resumes
Hopefully someone can help me figure out, if not a solution, at least an explanation for a behaviour.
9 Answers
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SQL JOIN vs IN performance?
I have a case where using a JOIN or an IN will give me the correct results... Which typically has better performance and why? How much does it depend on what database server you are running? (FYI I am using MSSQL)
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@Scope(“prototype”) bean scope not creating new bean
I want to use a annotated prototype bean in my controller. But spring is creating a singleton bean instead. Here is the code for that:
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How is location accuracy measured in Android?
Does anyone know the proper interpretation of the accuracy measurements returned by getAccuracy()? For instance, are they calculated as:
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Learning Ruby on Rails
As it stands now, I'm a Java and C# developer. The more and more I look at Ruby on Rails, the more I really want to learn it.
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Understanding “randomness”
I can't get my head around this, which is more random?
28 Answers
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