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Update map_types to strip const from key, value parameters so that init_type is more efficient and extract() returns a const reference unconditionally

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Christian Mazakas
2022-10-13 11:39:18 -07:00
parent 6227ae49a7
commit 87674d000b
3 changed files with 70 additions and 63 deletions
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9
include/boost/unordered/unordered_flat_map.hpp
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@@ -32,12 +32,15 @@ namespace boost {
struct map_types
{
using key_type = Key;
using init_type = std::pair<Key, T>;
using moved_type = std::pair<Key&&, T&&>;
using raw_key_type = typename std::remove_const<Key>::type;
using raw_value_type = typename std::remove_const<T>::type;
using init_type = std::pair<raw_key_type, raw_value_type>;
using moved_type = std::pair<raw_key_type&&, raw_value_type&&>;
using value_type = std::pair<Key const, T>;
template <class K, class V>
static K const& extract(std::pair<K, V> const& kv)
static raw_key_type const& extract(std::pair<K, V> const& kv)
{
return kv.first;
}