Unique pointer assignment operator

[jaffe15]

Just started learning about smart pointers and my professor uses the assignmet operator like this in the slides.

  unique_ptr<double> p{};
  p = new double{5.0};

But this gives compilation error: No match for ‘operator=’ (operand types are ‘std::unique_ptr<double>’ and ‘double*’)

What am I missing?

[jonnin]

a call to make_unique ?
https://en.cppreference.com/w/cpp/memory/unique_ptr/make_unique

[jaffe15]

Thanks! I also found this method. Is there a difference between these two ways of assigning:

    p = make_unique<double>(5.0);
    p = unique_ptr<double>(new double{5.0});

[seeplus]

See
https://stackoverflow.com/questions/22571202/differences-between-stdmake-unique-and-stdunique-ptr-with-new