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Core/Utils: Added map key/value utility projections for std::ranges algorithms

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This commit is contained in:
Shauren
2025-02-23 11:33:53 +01:00
parent da07737f9f
commit 67418a1aee
3 changed files with 15 additions and 1 deletions
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2
src/common/Containers/FlatSet.h
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@@ -70,7 +70,7 @@ public:
return { _storage.emplace(itr, std::move(newElement)), true };
}
std::pair<iterator, bool> insert(Key const& key) { return emplace(key); }
std::pair<iterator, bool> insert(Key const& key) { return this->emplace(key); }
std::size_t erase(Key const& key)
{

11
src/common/Containers/Utilities/MapUtils.h
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@@ -65,5 +65,16 @@ void MultimapErasePair(M& multimap, typename M::key_type const& key, typename M:
++itr;
}
}
/**
* Map key projection for various std::ranges algorithms
*/
inline constexpr auto MapKey = []<typename Pair>(Pair&& pair) constexpr -> decltype(auto) { return (std::forward<Pair>(pair).first); /*Parentheses required for decltype(auto) to deduce a reference*/ };
/**
* Map value projection for various std::ranges algorithms
*/
inline constexpr auto MapValue = []<typename Pair>(Pair&& pair) constexpr -> decltype(auto) { return (std::forward<Pair>(pair).second); /*Parentheses required for decltype(auto) to deduce a reference*/
};
}
#endif // TRINITYCORE_MAP_UTILS_H

3
src/common/Utilities/Tuples.h
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@@ -60,6 +60,9 @@ namespace Trinity
{
return Impl::new_from_tuple<T>(std::forward<Tuple>(args), std::make_index_sequence<std::tuple_size_v<std::remove_reference_t<Tuple>>>{});
}
template <std::size_t I>
inline constexpr auto TupleElement = []<typename Tuple>(Tuple&& tuple) constexpr -> decltype(auto) { return std::get<I>(std::forward<Tuple>(tuple)); };
}
#endif // Tuples_h__