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Postgresql aggregate array

Hi I have a two tables 4 Answers 4 ...
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C++ Exceptions questions on rethrow of original exception

Will the following append() in the catch cause the rethrown exception to see the effect of append() being called? 4 Answers...
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Apache Spark: map vs mapPartitions?

What's the difference between an RDD's map and mapPartitions method? And does flatMap behave like map or like mapPartitions ? Thanks. ...
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Embedding unmanaged dll into a managed C# dll

I have a managed C# dll that uses an unmanaged C++ dll using DLLImport. All is working great. However, I want to embed that unmanaged DLL inside my managed DLL as explain by Microsoft there: ...
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How can I check if a key is pressed during the click event with jQuery?

I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event. ...
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How to implement WiX installer upgrade?

At work we use WiX for building installation packages. We want that installation of product X would result in uninstall of the previous version of that product on that machine. ...
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ApartmentState for dummies

I just corrected a bug using this: 1 Answer 1 ...
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B-Tree vs Hash Table

In MySQL, an index type is a b-tree, and access an element in a b-tree is in logarithmic amortized time O(log(n)) . 5 Answ...
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How does one use rescue in Ruby without the begin and end block

I know of the standard technique of having a begin rescue end 5 Answers 5 ...
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Should you commit .gitignore into the Git repos?

Do you think it is a good practice to commit .gitignore into a Git repo? 5 Answers 5 ...