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C++ std::multimap and Equal Range

Logan

Today I have encountered a problem: Given that there are multiple equivalent keys in an instance of std::multimap, how could we list all of the corresponding values? For example: #include <map> #include <iostream> int main() { std::multimap<int, int> xs;...

C++ Associative Container and Iterator Validness

Logan

I used to believe that iterators will be invalidated after calling the member functions insert() or erase() of containers. Thus, I would adopt a conservative approach: Create a temporary container. Copy the elements which I would like to keep to the temporary container. Swap the container. For...