Struct template promote<bool, From, void, std_valarray_tag>

Boost C++ Libraries

Struct template promote<bool, From, void, std_valarray_tag>

boost::numeric::functional::promote<bool, From, void, std_valarray_tag>

Synopsis

// In header: <boost/accumulators/numeric/functional/valarray.hpp>

template<typename From> 
struct promote<bool, From, void, std_valarray_tag> : public std::unary_function< From, bool > {

  // public member functions
  bool operator()(From &) const;
};

Description

`promote` public member functions

```
bool operator()(From & arr) const;
```