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10155902
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0
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0
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1
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CreationDate
2012-04-14T17:50:21.687
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2012-04-14T17:50:21.687
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2017-05-23T12:04:31.647
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10155839
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2
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text
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.h vs .hpp is the 90% equivalence of <pre><code>#include <cmath> vs #include <math.h> </code></pre> Some people prefer to use <code>.hpp</code> when they are doing exclusive C++ programming. You will see <code>.hpp</code> in libraries like <code>Boost</code>. However, the other 10% is really important. For example, taking from <code>Boost</code> library doc, they explain the reason of using <code>.hpp</code> over <code>.h</code>: <blockquote> Most Boost libraries are header-only: they consist entirely of header files containing templates and inline functions, and require no separately-compiled library binaries or special treatment when linking. </blockquote> If you fall in that case, you should use <code>.hpp</code>, but this can cost longer compilation time. Otherwise, you might want to keep <code>.h</code> style. That's just my personal taste. It isn't <code>C-oriented</code> at all, in my honest opinion. Further reading: <a href="https://stackoverflow.com/questions/1724036/splitting-templated-c-classes-into-hpp-cpp-files-is-it-possible">Splitting templated C++ classes into .hpp/.cpp files--is it possible?</a> <a href="https://stackoverflow.com/questions/3841238/condensing-declaration-and-implementation-into-an-hpp-file">Condensing Declaration and Implementation into an HPP file</a> <a href="https://stackoverflow.com/questions/3526299/c-templates-declare-in-h-define-in-hpp">C++ templates declare in .h, define in .hpp</a>
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1. COThe quote from the boost docs doesn't explain why they name their files `.hpp` rather than `.h`.
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 USSeth Carnegie

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