CODEWITHSUNDEEP
c++c++17
sagar
sagar

Reputation: 387

How to initialize the std::optional of a user defined data type

I am trying to learn new features of C++ 17.

Please find the below code:

class Test
{
public:
      Test(int x):y(x){}
      ~Test(){}
      int getx()
      {
          return x;
      }
private:
      int x;
};
struct Container
{
    std::optional<Test> test;
};
int main()
{
    struct Container obj;
    // here i want to initialize the member "test" of 
    // struct Container
    obj.test = make_optional<Test>(10); ----> is this correct??
}

Can someone please let me know how to initialize a std::optional? For example, if I declare it like:

std::optional<Test> t

How can I initialize it?

Upvotes: 4

Views: 13399

Answers (1)

flogram_dev
flogram_dev

Reputation: 42888

obj.test = make_optional<Test>(10);

----> is this correct??

Yes it is. You could also do it like this:

obj.test = Test(10);

Upvotes: 4

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