Forward declares boost::hana::empty.  
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| Namespaces | |
| boost::hana | |
| Namespace containing everything in the library. | |
| Variables | |
| template<typename M > | |
| constexpr auto | boost::hana::empty | 
| Identity of the monadic combination concat.SignatureGiven a MonadPlusM, the signature is \( \mathtt{empty}_M : \emptyset \to M(T) \).  More... | |
Forward declares boost::hana::empty.