Can't create bn::optional<T> instance when T contains const member variable

[copyrat90]

If I understand correctly, bn::optional<T>::emplace() is the only option to create a bn::optional<T> object which contains actual value, when T contains const member variable(s).
std::optional<T>::emplace() supports this, but bn::optional<T>::emplace() doesn't.
Because bn::optional<T>::emplace() uses operator= internally, but T can't have assignment operators, as it has const member variable(s).

bn::optional

#include "bn_core.h"
#include "bn_log.h"
#include "bn_optional.h"

class Test
{
    const int num_;
public:
    Test(int num) : num_(num) {}
    int GetNum() const { return num_; }
};

int main()
{
    bn::core::init();

    bn::optional<Test> a;
    // error: use of deleted function 'Test& Test::operator=(Test&&)'
    a.emplace(42);
    BN_LOG(a->GetNum());

    while (true)
        bn::core::update();
}

std::optional

#include <iostream>
#include <optional>

class Test
{
    const int num_;
public:
    Test(int num) : num_(num) {}
    int GetNum() const { return num_; }
};

int main()
{
    std::optional<Test> a;
    // no issue
    a.emplace(42);
    std::cout << a->GetNum();
    return 0;
}

[GValiente]

Please check the latest commit, I think it is fixed now.

[copyrat90]

It is fixed now.
Thank you for your quick action.