mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
32 lines
961 B
C++
32 lines
961 B
C++
#ifndef SPROUT_FUNCTIONAL_NOT2_HPP
|
|
#define SPROUT_FUNCTIONAL_NOT2_HPP
|
|
|
|
#include <functional>
|
|
#include <sprout/config.hpp>
|
|
|
|
namespace sprout {
|
|
// 20.8.8 negators
|
|
template<typename Predicate>
|
|
class binary_negate {
|
|
public:
|
|
typedef typename Predicate::first_argument_type first_argument_type;
|
|
typedef typename Predicate::second_argument_type second_argument_type;
|
|
typedef bool result_type;
|
|
protected:
|
|
Predicate fn;
|
|
public:
|
|
explicit SPROUT_CONSTEXPR binary_negate(Predicate const& pred)
|
|
: fn(pred)
|
|
{}
|
|
SPROUT_CONSTEXPR bool operator()(typename Predicate::first_argument_type const& x, typename Predicate::second_argument_type const& y) const {
|
|
return !fn(x, y);
|
|
}
|
|
};
|
|
|
|
template<typename Predicate>
|
|
inline SPROUT_CONSTEXPR sprout::binary_negate<Predicate> not2(Predicate const& pred) {
|
|
return sprout::binary_negate<Predicate>(pred);
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_FUNCTIONAL_NOT2_HPP
|