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Added hashlib support for std::tuple<>

This commit is contained in:
Clifford Wolf 2015-04-07 17:23:30 +02:00
parent f7fb21f185
commit aae5f2ca08
1 changed files with 15 additions and 0 deletions
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15
kernel/hashlib.h
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@ -92,6 +92,21 @@ template<typename P, typename Q> struct hash_ops<std::pair<P, Q>> {
}
};
template<typename... T> struct hash_ops<std::tuple<T...>> {
static inline bool cmp(std::tuple<T...> a, std::tuple<T...> b) {
return a == b;
}
template<size_t I = 0>
static inline typename std::enable_if<I == sizeof...(T), unsigned int>::type hash(std::tuple<T...>) {
return mkhash_init;
}
template<size_t I = 0>
static inline typename std::enable_if<I != sizeof...(T), unsigned int>::type hash(std::tuple<T...> a) {
hash_ops<typename std::tuple_element<I, std::tuple<T...>>::type> element_ops;
return mkhash(hash<I+1>(a), element_ops.hash(std::get<I>(a)));
}
};
template<typename T> struct hash_ops<std::vector<T>> {
static inline bool cmp(std::vector<T> a, std::vector<T> b) {
return a == b;