Boost.Hana: boost::hana::constant_detail::which< A, B, C > Struct Template Reference

| Boost.Hana 1.7.1 Your standard library for metaprogramming |

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boost::hana::constant_detail::which< A, B, C > Struct Template Reference

## Description

### template<typename A, typename B, typename C>
struct boost::hana::constant_detail::which< A, B, C >

Todo:
  This is an awful hack to avoid having

common<integral_constant_tag<int>, integral_constant_tag<long>>
==
CanonicalConstant<long>