There is no macro needed here. You just write the code, then execute it at compi... | Hacker News

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		mhh__ on Aug 1, 2017 \| parent \| context \| favorite \| on: Show HN: Compile-time HTML parsing in C++14 There is no macro needed here. You just write the code, then execute it at compile time. This is designed properly, it's not any where near as hacky as C++'s constexpr

junke on Aug 1, 2017 [–]

No need for macros, eval-when is a special operator designed for this:

    (eval-when (:compile-toplevel)
       ...)

You can also have read-time macros or load-time values, depending on what you need.

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