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Are foreign keys really necessary in a database design?
...e a programmer is actually doing this in the right manner already, then do we really need the concept of foreign keys?
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uncaught syntaxerror unexpected token U JSON
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Why do we need virtual functions in C++?
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What is the difference between `throw new Error` and `throw someObject`?
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
...d, and once it is initialized, it will never be modified again. It will however, be accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
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Cluster analysis in R: determine the optimal number of clusters
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JavaScript: Passing parameters to a callback function
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