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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
>
using predicate_wrapper = If<
Eval<Predicate<Current>>,
Eval<Cons<Current, Previous>>,
Previous
>;
public:
typedef Eval<Fold<predicate_wrapper, void, List>> type;
};
template <
template<typename> class Predicate,
typename List
>
class Remove {
private:
template <typename Element>
using predicate_negator = Not<Predicate<Element>>;
public:
typedef Eval<Filter<predicate_negator, List>> type;
};
}
#endif // TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_FILTER_H_
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