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How does lucene index documents?

...it is processed through the same analyzer that was used to build the index and then used to look up the matching term(s) in the index. That provides a list of documents that match the query. share | ...
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Pointers in C: when to use the ampersand and the asterisk?

I'm just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, string...
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How to check if Location Services are enabled?

I'm developing an app on Android OS. I don't know how to check if Location Services are enabled or not. 22 Answers ...
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Allowed characters in filename [closed]

...bitten by that once when I shortened an include file from const.h to con.h and spent half an hour figuring out why the compiler hung. Turns out DOS ignored extensions for devices so that con.h was exactly the same as con, the input console (meaning, of course, the compiler was waiting for me to typ...
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How to log something in Rails in an independent log file?

In rails I want to log some information in a different log file and not the standard development.log or production.log. I want to do this logging from a model class. ...
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How to check if an NSDictionary or NSMutableDictionary contains a key?

... And what if the key does exist, but it's corresponding value is nil? – Fyodor Soikin May 6 '10 at 21:30 2...
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In Java, when should I create a checked exception, and when should it be a runtime exception? [dupli

When should I create a checked exception, and when should I make a runtime exception? 14 Answers ...
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Why should I prefer to use member initialization lists?

... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list: B() : a(3) { } This would only call A's A(int) constructor and not its default constructo...
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What does multicore assembly language look like?

...that's needed is software support for each thread to set up its own tables and messaging queues. The OS uses those to do the actual multi-threaded scheduling. As far as the actual assembly is concerned, as Nicholas wrote, there's no difference between the assemblies for a single threaded or multi ...
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How can I unstage my files again after making a local commit?

I have executed the following command 7 Answers 7 ...