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#ifndef TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_FILTER_H_
#define TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_FILTER_H_
#include "fold.h"
#include "conditional/if.h"
namespace tav {
template <
template<typename> class Predicate,
typename List
>
class Filter {
private:
template <
typename Current,
typename Previous
>
struct predicate_wrapper {
typedef If<
Predicate<Current>::type::value,
Cons<Current, Previous>,
Previous
> type;
};
public:
typedef typename Fold<predicate_wrapper, void, List>::type type;
};
template <
template<typename> class Predicate,
typename List
>
class Remove {
private:
template <typename Element>
using predicate_negator = Not<Predicate<Element>>;
public:
typedef typename Filter<predicate_negator, List>::type type;
};
}
#endif // TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_FILTER_H_
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