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Using DISTINCT and COUNT together in a MySQL Query

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Regular cast vs. static_cast vs. dynamic_cast [duplicate]

I've been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e. ...
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Generate random numbers uniformly over an entire range

I need to generate random numbers within a specified interval, [max;min]. 17 Answers 1...
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Replacement for “rename” in dplyr

I like plyr's renaming function rename . I have recently started using dplyr, and was wondering if there is an easy way to rename variables using a function from dplyr, that is as easy to use as to plyr's rename ? ...
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How to convert SecureString to System.String?

All reservations about unsecuring your SecureString by creating a System.String out of it aside , how can it be done? 11 A...
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Purpose of Unions in C and C++

I have used unions earlier comfortably; today I was alarmed when I read this post and came to know that this code 15 Ans...
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WAMP error: Forbidden You don't have permission to access /phpmyadmin/ on this server

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What do numbers using 0x notation mean?

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What are all the common undefined behaviours that a C++ programmer should know about? [closed]

What are all the common undefined behaviours that a C++ programmer should know about? 11 Answers ...
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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?

What's the difference between getPath() , getAbsolutePath() , and getCanonicalPath() in Java? 6 Answers ...