6 std::map<std::string, double> variables;
11 variables[
"pi"] = 3.141592653589792;
12 variables[
"e"] = 2.718281828459;
20 return variables[name];
25 variables[std::move(name)] = value;
void set_variable(std::string name, double value)
double get_variable(std::string const &name)