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Merge pull request #463 from tituswinters/f.4

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Don't mix future runtime customization constexpr.
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Gabriel Dos Reis 2015-12-15 09:22:28 -08:00
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@ -2080,6 +2080,13 @@ This is usually a very good thing.
Don't try to make all functions `constexpr`. Most computation is best done at run time.
##### Note
Any API that may eventually depend on high-level runtime configuration or
business logic should not be made `constexpr`. Such customization can not be
evaluated by the compiler, and any `constexpr` functions that depend upon that
API will have to be refactored or drop `constexpr`.
##### Enforcement
Impossible and unnecessary.