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I have to admit, I have no idea what the @ symbol does. Can anyone clarify?

It can't be a macro, so I assume it's a C++14 feature I'm not aware of.

It is not part of C++14, it is a small syntaxic sugar that compiles to iod symbols. A compiler convert it to plain C++. In short, their are empty objects holding a unique C++ type. More info here: https://github.com/matt-42/iod

Pretty interesting Matt, would you consider uploading to biicode (a C++ deps manager) so that C++ programmers reuse it in there projects?

Nice idea. I probably do so after I fix the first batch of issues.

This is the getting started guide:

http://docs.biicode.com/c++/gettingstarted.html

Hope you find it useful.

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