RB5.8 Передача параметра по значению

RobertDeMilo

Apr 17th, 2024

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#include<iostream>
#include<string>
#include<map>
using namespace std;
////////////////////////////////////////////////////////////////////////////////
static string FindNameByYear(const map<int, string>& names, int year)
{
string name;
for (const auto& item : names)
{
if (item.first <= year)
{
name = item.second;
}
else
{
break;
}
}
return name;
}
////////////////////////////////////////////////////////////////////////////////
static string FindNameByYear(const map<int, string>& names, int year)
{
auto iter_after = names.upper_bound(year);
string name;
if (iter_after != names.begin())
{
name = (--iter_after)->second;
}
return name;
}
////////////////////////////////////////////////////////////////////////////////
class Person
{
public:
/* void ChangeFirstName(int year, const string& first_name)
{
first_names[year] = first_name;
}*/
/* void ChangeLastName(int year, const string& last_name)
{
last_names[year] = last_name;
}*/
// call for temporary: move -> move
// else: copy -> move
void ChangeFirstName(int year, string first_name)
{
first_names[year] = move(first_name);
}
void ChangeLastName(int year, string last_name)
{
last_names[year] = move(last_name);
}
string GetFullName(int year)
{
string first_name = FindNameByYear(first_names, year);
string last_name = FindNameByYear(last_names, year);
if (first_name.empty() && last_name.empty())
{
return "Incognito";
}
else if (first_name.empty())
{
return last_name + " with unknown first name";
}
else if (last_name.empty())
{
return first_name + " with unknown last name";
}
else
{
return first_name + " " + last_name;
}
}
private:
map<int, string> first_names;
map<int, string> last_names;
};
int main()
{
Person person;
person.ChangeFirstName(2018, string("5"));
return 0;
}

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