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add polymorphic hash functor

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bolero-MURAKAMI 2013-02-07 23:39:57 +09:00
parent 70b94395d5
commit 3ab397171f
1 changed files with 14 additions and 0 deletions
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14
sprout/functional/hash/hash.hpp
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@ -5,6 +5,7 @@
#include <sprout/config.hpp> #include <sprout/config.hpp>
#include <sprout/functional/hash/hash_fwd.hpp> #include <sprout/functional/hash/hash_fwd.hpp>
#include <sprout/functional/hash/to_hash.hpp> #include <sprout/functional/hash/to_hash.hpp>
#include <sprout/utility/forward.hpp>
namespace sprout { namespace sprout {
// //
@ -32,6 +33,19 @@ namespace sprout {
struct hash<T const volatile> struct hash<T const volatile>
: public sprout::hash<T> : public sprout::hash<T>
{}; {};
template<>
struct hash<void> {
public:
typedef std::size_t result_type;
public:
template<typename T>
SPROUT_CONSTEXPR std::size_t
operator()(T&& v)
const SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout::to_hash(sprout::forward<T>(v))))
{
return sprout::to_hash(sprout::forward<T>(v));
}
};
#define SPROUT_HASH_SPECIALIZE(type) \ #define SPROUT_HASH_SPECIALIZE(type) \
template<> \ template<> \