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#ifndef TYPEASVALUE_SRC_LIST_CONS_H_
#define TYPEASVALUE_SRC_LIST_CONS_H_
#include "pair.h"
namespace tav {
namespace detail {
template <typename Pair>
struct Car {
static_assert(
IsPair<Pair>::value,
"Pair type required"
);
typedef typename Pair::car type;
};
template <typename Pair>
struct Cdr {
static_assert(
IsPair<Pair>::value,
"Pair type required"
);
typedef typename Pair::cdr type;
};
}
template <
typename CAR,
typename CDR
>
using Cons = Pair<CAR, CDR>;
template <typename Pair>
using Car = Eval<detail::Car<Pair>>;
template <typename Pair>
using Cdr = Eval<detail::Cdr<Pair>>;
}
#endif // TYPEASVALUE_SRC_LIST_CONS_H_
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