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On design patterns: When should I use the singleton?

The glorified global variable - becomes a gloried global class. Some say breaking object-oriented design. 19 Answers ...
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What is the difference between RDF and OWL? [closed]

I am trying to grasp the concept of Semantic Web. I am finding it hard to understand what exactly is the difference between RDF and OWL. Is OWL an extension of RDF or these two are totally different technologies? ...
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What is the difference between a string and a byte string?

I am working with a library which returns a byte string and I need to convert this to a string. 7 Answers ...
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When should I create a destructor?

For example: 7 Answers 7 ...
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How do you loop through each line in a text file using a windows batch file?

I would like to know how to loop through each line in a text file using a Windows batch file and process each line of text in succession. ...
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Why does the is operator return false when given null?

It seems to me that the is operator is a bit inconsistent. 7 Answers 7 ...
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When should I use genetic algorithms as opposed to neural networks? [closed]

Is there a rule of thumb (or set of examples) to determine when to use genetic algorithms as opposed to neural networks (and vice-versa) to solve a problem? ...
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What's the difference between backtracking and depth first search?

What's the difference between backtracking and depth first search? 13 Answers 13 ...
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Difference between a user and a schema in Oracle?

What is the difference between a user and a schema in Oracle? 15 Answers 15 ...
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Does JSON syntax allow duplicate keys in an object?

Is this valid json? 12 Answers 12 ...