Forward declares boost::hana::index_if.  
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| Namespaces | |
| boost::hana | |
| Namespace containing everything in the library. | |
| Variables | |
| constexpr auto | boost::hana::index_if | 
| Finds the value associated to the first key satisfying a predicate.Given an Iterablestructurexsand a predicatepred,index_if(xs, pred)returns ahana::optionalcontaining anIntegralConstantof the index of the first element that satisfies the predicate or nothing if no element satisfies the predicate.  More... | |
Forward declares boost::hana::index_if.