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hash: use std::hash for string hashing

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This commit is contained in:
Justin Viiret 2017-08-10 16:58:48 +10:00 committed by Matthew Barr
parent 25170b32eb
commit fe31b387e8
1 changed files with 10 additions and 3 deletions
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11
src/util/hash.h
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@ -35,6 +35,7 @@
#define UTIL_HASH_H
#include <functional>
#include <string>
#include <type_traits>
#include <utility>
@ -123,9 +124,15 @@ struct ue2_hash<T, typename std::enable_if<has_hash_member<T>::value>::type> {
}
};
/** \brief Hash for any container type that supports std::begin(). */
/**
* \brief Hash for any container type that supports std::begin().
*
* We exempt std::string as std::hash<std:string> is provided and quicker.
*/
template<typename T>
struct ue2_hash<T, typename std::enable_if<is_container<T>::value &&
struct ue2_hash<T, typename std::enable_if<
is_container<T>::value &&
!std::is_same<typename std::decay<T>::type, std::string>::value &&
!has_hash_member<T>::value>::type> {
size_t operator()(const T &obj) const {
size_t v = 0;