Using std::vector::emplace_back avoids useless constructions of temporaries

emplace_back.cpp

#include <iostream>
#include <vector>

#include "verbose.hpp"

int main()
{
    std::cout << "#1" << std::endl;
    {
        std::vector<Verbose> f;
        for (int ii = 0; ii < 2; ii++)
        {
            f.push_back(Verbose(5));
        }
    }
    std::cout << "#2" << std::endl;
    {
        std::vector<Verbose> f;
        for (int ii = 0; ii < 2; ii++)
        {
            f.emplace_back(5);
        }
    }
}

/*
Possible outout
#1
Verbose::Verbose(int) this=0x7ffcbaeeb024
Verbose::Verbose(Verbose&&) this=0x5635474d32c0 other=0x7ffcbaeeb024
Verbose::~Verbose() this=0x7ffcbaeeb024
Verbose::Verbose(int) this=0x7ffcbaeeb024
Verbose::Verbose(Verbose&&) this=0x5635474d32e4 other=0x7ffcbaeeb024
Verbose::Verbose(Verbose&&) this=0x5635474d32e0 other=0x5635474d32c0
Verbose::~Verbose() this=0x5635474d32c0
Verbose::~Verbose() this=0x7ffcbaeeb024
Verbose::~Verbose() this=0x5635474d32e0
Verbose::~Verbose() this=0x5635474d32e4
#2
Verbose::Verbose(int) this=0x5635474d32e0
Verbose::Verbose(int) this=0x5635474d32c4
Verbose::Verbose(Verbose&&) this=0x5635474d32c0 other=0x5635474d32e0
Verbose::~Verbose() this=0x5635474d32e0
Verbose::~Verbose() this=0x5635474d32c0
Verbose::~Verbose() this=0x5635474d32c4
*/