sto cercando di compilare the code taken from hereunordered_map - {{chiave, valore}, {key, value}} sintassi non valida
// constructing unordered_maps
#include <iostream>
#include <string>
#include <unordered_map>
typedef std::unordered_map<std::string,std::string> stringmap;
stringmap merge (stringmap a,stringmap b) {
stringmap temp(a); temp.insert(b.begin(),b.end()); return temp;
}
int main()
{
stringmap first; // empty
stringmap second ({{"apple","red"},{"lemon","yellow"}}); // init list
stringmap third ({{"orange","orange"},{"strawberry","red"}}); // init list
stringmap fourth (second); // copy
stringmap fifth (merge(third,fourth)); // move
stringmap sixth (fifth.begin(),fifth.end()); // range
std::cout << "sixth contains:";
for (auto& x: sixth) std::cout << " " << x.first << ":" << x.second;
std::cout << std::endl;
return 0;
}
con MSVC2012 ma sto ricevendo
errore C2143: errore di sintassi: manca ')' prima '{'
sulla linea di codice
stringmap second ({{"apple","red"},{"lemon","yellow"}}); // init list
Mi manca qualcosa?
funziona per gcc: https://ideone.com/qkOUMN – moooeeeep