How do boost operators work?

Posted by FredOverflow on Stack Overflow See other posts from Stack Overflow or by FredOverflow
Published on 2010-06-02T13:30:19Z Indexed on 2010/06/02 13:34 UTC
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boost::operators automatically defines operators like + based on manual implementations like += which is very useful. To generate those operators for T, one inherits from boost::operators<T> as shown by the boost example:

class MyInt : boost::operators<MyInt>

I am familiar with the CRTP pattern, but I fail to see how it works here. Specifically, I am not really inheriting any facilities since the operators aren't members. boost::operators seems to be completely empty, but I'm not very good at reading boost source code.

Could anyone explain how this works in detail? Is this mechanism well-known and widely used?

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