Forward declares boost::hana::or_.  
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| Namespaces | |
| boost::hana | |
| Namespace containing everything in the library. | |
| Variables | |
| constexpr auto | boost::hana::or_ | 
| Return whether any of the arguments is true-valued. or_can be called with one argument or more. When called with two arguments,or_uses tag-dispatching to find the right implementation. Otherwise,.  More... | |
Forward declares boost::hana::or_.