readAllBytes.cpp

static std::vector<char> readAllBytes(char const* filename)
{
    std::ifstream ifs(filename, std::ios::binary | std::ios::ate);
    std::ifstream::pos_type pos = ifs.tellg();

    if (pos == 0)
    {
        return std::vector<char>{};
    }

    std::vector<char> result(pos);

    ifs.seekg(0, std::ios::beg);
    ifs.read(&result[0], pos);

    return result;
}