Re: [boost] Adding optional<T&> find like method to associative containers in boost.

19 Dec 2024

      On Thu, Dec 19, 2024 at 10:06 AM Peter Dimov via Boost <
boost@lists.boost.org> wrote:
...
Vinnie Falco wrote:
...
On Thu, Dec 19, 2024 at 7:30 AM Christian Mazakas via Boost <
boost@lists.boost.org> wrote:
...
users.find(user_id).map([](auto& user) { user.status =
deactivated; return user; });
try_find( users, user_id ).map(
        [](auto& user)
        {
            user.status = deactivated;
            return user;
        });
In what namespace and in what header is try_find defined?
Haven't thought about this and here's a guess:

    #include 
    ...
        boost::try_find( users, user_id ).map(
            [](auto& user)
            {
                user.status = deactivated;
                return user;
            });

In this case `try_find` would return `boost::optional`. And
`std::try_find` could return `std::optional`.

Thanks