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// 这个类包含两个引用类型的成员
class GenomeScale
{
public:
GenomeScale(const double& frame_width, const size_t& genome_display_length);
const double& frame_width;
const size_t& genome_display_length;
};
class Frame
{
public:
Frame(double width, double height, size_t genome_display_length);
......
GenomeScale genome_scale;
double width;
double height;
size_t genome_display_length;
......
}
GenomeScale::GenomeScale(const double& frame_width, const size_t& genome_display_length)
: frame_width(frame_width)
, genome_display_length(genome_display_length)
{
// 地址搞出来看一下
std::cout << "members of genome scale:" << endl
<< " frame width: " << &(this->frame_width) << endl
<< " genome display length: " << &(this->genome_display_length) << endl;
}
Frame::Frame(double width, double height, size_t genome_display_length)
: width(width)
, height(height)
, genome_display_length(genome_display_length)
, genome_scale(this->width, this->genome_display_length)
{
// 源的地址
std::cout << "members of frame:" << endl
<< " width: " << &(this->width) << endl
<< " genome display length: " << &(this->genome_display_length) << endl;
}
members of genome scale:
frame width: 0x1dc6190
genome display length: 0x7fff92619c98
members of frame:
width: 0x1dc6190
genome display length: 0x1dc61a0