iclonable.cpp

Shows how to use xtd::iequatable interface.

#include <xtd/xtd>
 
class foo : public object, public iclonable {
public:
  explicit foo(int value) : value_ {value} {}
 
  uptr<object> clone() const override {return new_uptr<foo>(value_);}
 
  string to_string() const noexcept override {return string::format("{}", value_);}
 
private:
  int value_ = 0;
};
 
auto main() -> int {
  auto f1 = foo {42};
  console::write_line("f1 {{type = {}, value = {}}}", typeof_(f1), f1);
 
  auto f2 = f1.clone();
  console::write_line("f2 {{type = {}, value = {}}}", typeof_(f2), *f2);
 
  auto f3 = as<foo>(f1.clone());
  console::write_line("f3 {{type = {}, value = {}}}", typeof_(f3), *f3);
}
 
// This code produces the following output :
//
// f1 {type = foo, value = 42}
// f2 {type = std::unique_ptr<xtd::object, std::default_delete<xtd::object>>, value = 42}
// f3 {type = std::unique_ptr<foo, std::default_delete<foo>>, value = 42}