初始化器列表中的非常大的数组

const int blockSize = 1024;
int largeArray[1024 * 1024];
for (int i = 0; i < 1024; ++i) {
    std::copy_n(smallArray, blockSize, largeArray + i * blockSize);
}

std::vector<int> largeVector(1024 * 1024);
for (int i = 0; i < largeVector.size(); ++i) {
    largeVector[i] = i;
}

#include <boost/interprocess/file_mapping.hpp>
#include <boost/interprocess/mapped_region.hpp>

namespace bi = boost::interprocess;

bi::file_mapping fm("large_data.bin", bi::read_only);
bi::mapped_region region(fm, bi::read_only);
int* data = static_cast<int*>(region.get_address());

g++ -O3 -o my_program my_program.cpp

#include <iostream>
#include <vector>

int main() {
    const int size = 1024 * 1024;
    std::vector<int> largeArray(size);

    for (int i = 0; i < size; ++i) {
        largeArray[i] = i;
    }

    std::cout << "Array initialized successfully!" << std::endl;
    return 0;
}