RB5.1 Перемещение временных объектов

RobertDeMilo

Apr 16th, 2024

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#include <iostream>
#include <string>
#include <vector>
using namespace std;
string MakeString()
{
return string(100000000,'a');
}
int main()
{
{
LOG_DURATION("with variable");
vector<string> strings;
string heavy_string = MakeString();
strings.push_back(heavy_string);
//cout << heavy_string;
}
{
LOG_DURATION("without variable");
vector<string> strings;
strings.push_back(MakeString()); // результат вызова функции - временный объект передаем в метод
}
{
LOG_DURATION("ctor: with variable");
vector<string> strings;
string heavy_string = string(100000000, 'a');
strings.push_back(heavy_string);
}
{
LOG_DURATION("ctor: without variable");
vector<string> strings;
strings.push_back(string(100000000, 'a'));
}
return 0;
}

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