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By mswatcher
Submitted: Jun 24 2013 / 05:34

A question recently asked why a ‘constexpr’ in C++ may comprise only a return statement. It’s a good question. On quick glance the restriction seems somewhat arbitrary, and indeed quite limiting. I think the answer comes not from the desires of the users (us programmers) but from the implications on compiler vendors. In particular, how does it simplify the job of a compiler?
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