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What exactly is Arel in Rails 3.0?
I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries.
4 Answers
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Serializing an object as UTF-8 XML in .NET
...ut I'm shocked if this is the simplest way to encode an object as UTF-8 in memory. There has to be an easier way doesn't there?
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Should I always use a parallel stream when possible?
...a sequential one. Coordinating the threads takes a significant amount of time. I would use sequential streams by default and only consider parallel ones if
I have a massive amount of items to process (or the processing of each item takes time and is parallelizable)
I have a performance problem in ...
Why does Dijkstra's algorithm use decrease-key?
Dijkstra's algorithm was taught to me was as follows
3 Answers
3
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Foreign keys in mongo?
... a NoSQL database like MongoDB there are not 'tables' but collections. Documents are grouped inside Collections. You can have any kind of document – with any kind of data – in a single collection. Basically, in a NoSQL database it is up to you to decide how to organise the data and its relations...
Is the != check thread safe?
...changed in between by another thread comparison may produce false.
Also, memory visibility problem is relevant here, there is no guarantee that changes to a made by another thread will be visible to the current thread.
sha...
When do I need to use a semicolon vs a slash in Oracle SQL?
We have been having some debate this week at my company as to how we should write our SQL scripts.
6 Answers
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Where does Java's String constant pool live, the heap or the stack?
...ool used by JVMs to handle String literals. But I don't know which type of memory is used by the JVM to store String constant literals. The stack or the heap? Since its a literal which is not associated with any instance I would assume that it will be stored in stack. But if it's not referred by any...
Skip a submodule during a Maven build
We have a need to be able to skip a submodule in certain environments.
5 Answers
5
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Too many 'if' statements?
...mpted to write a few solutions, but I end up with a similar amount of statements.
26 Answers
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