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add try_emplace and insert_or_assign functions #27

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Matvey Cherevko
2019-06-03 00:12:40 +07:00
parent 8237a106ea
commit d7ecb21109
3 changed files with 80 additions and 0 deletions
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42
headers/flat.hpp/flat_map.hpp
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@@ -399,6 +399,28 @@ namespace flat_hpp
: insert(value).first;
}
template < typename TT >
std::pair<iterator, bool> insert_or_assign(key_type&& key, TT&& value) {
iterator iter = lower_bound(key);
if ( iter == end() || this->operator()(key, *iter) ) {
iter = emplace_hint(iter, std::move(key), std::forward<TT>(value));
return {iter, true};
}
(*iter).second = std::forward<TT>(value);
return {iter, false};
}
template < typename TT >
std::pair<iterator, bool> insert_or_assign(const key_type& key, TT&& value) {
iterator iter = lower_bound(key);
if ( iter == end() || this->operator()(key, *iter) ) {
iter = emplace_hint(iter, key, std::forward<TT>(value));
return {iter, true};
}
(*iter).second = std::forward<TT>(value);
return {iter, false};
}
template < typename InputIter >
void insert(InputIter first, InputIter last) {
insert_range_(first, last);
@@ -427,6 +449,26 @@ namespace flat_hpp
return insert(hint, value_type(std::forward<Args>(args)...));
}
template < typename... Args >
std::pair<iterator, bool> try_emplace(key_type&& key, Args&&... args) {
iterator iter = lower_bound(key);
if ( iter == end() || this->operator()(key, *iter) ) {
iter = emplace_hint(iter, std::move(key), std::forward<Args>(args)...);
return {iter, true};
}
return {iter, false};
}
template < typename... Args >
std::pair<iterator, bool> try_emplace(const key_type& key, Args&&... args) {
iterator iter = lower_bound(key);
if ( iter == end() || this->operator()(key, *iter) ) {
iter = emplace_hint(iter, key, std::forward<Args>(args)...);
return {iter, true};
}
return {iter, false};
}
void clear()
noexcept(noexcept(std::declval<container_type&>().clear())) {
data_.clear();