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

On Mon, Dec 16, 2024 at 12:48 PM Дмитрий Архипов via Boost < boost@lists.boost.org> wrote:

пн, 16 дек. 2024 г. в 13:36, Ivan Matek via Boost :

1) JSON already had a dependency on System, but did not have a dependency on Optional. 2) The function can fail for several reasons, and an error_code stored in the result can communicate those reasons, while optional cannot (e.g. see this:

https://www.boost.io/doc/libs/latest/libs/json/doc/html/json/ref/boost__json... ).

Nice. IIRC I have used it. :) btw not sure why pos means in documentation, maybe c/p mistake from other overloads and should say key? But unlike Json map lookup can fail for only 1 reason(element not in map), so I feel optional would be fine, for JSON logic is different.

_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost