86         return *this;
91         iterator where = this->find(key);
93         if (where == this->end()) {
94 … where = this->emplace(std::piecewise_construct, std::forward_as_tuple(key), std::tuple<>()).first;
100         iterator where = this->find(key);
102         if (where == this->end()) {
103 …where = this->emplace(std::piecewise_construct, std::forward_as_tuple(std::move(key)), std::tuple<…
109         iterator where = this->find(key);  in at()
111         if (where == this->end()) {  in at()
118         const_iterator where = this->find(key);  in at()
120         if (where == this->end()) {  in at()
131         return this->emplace(std::forward<P>(value));  in insert()
137         return this->emplace_hint(hint, std::forward<P>(value));  in insert()
142         this->internal_merge(source);  in merge()
147         this->internal_merge(std::move(source));  in merge()
152         this->internal_merge(source);  in merge()
157         this->internal_merge(std::move(source));  in merge()
286         return *this;
292         return this->emplace(std::forward<P>(value));  in insert()
298         return this->emplace_hint(hint, std::forward<P&&>(value));  in insert()
303         this->internal_merge(source);  in merge()
308         this->internal_merge(std::move(source));  in merge()
313         this->internal_merge(source);  in merge()
318         this->internal_merge(std::move(source));  in merge()