I have a map of ticket and baggage, each ticket must be unique and must correspond to a position on the map is it possible to change only the baggage (m_bagage-> second) without changing the key?
std::unordered_map<Ticket, bagage> m_consigne;
1 Answers
You cannot change keys in a map, they are const. Moreover keys in maps are unique. To change the value of an existing entry, given the key you can do
std::unordered_map<Ticket, bagage> m_consigne;
// add some entries
bagage b;
Ticket t;
m_consigne[t] = b;
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