A concrete example of an "Optional" implementation in present in the sql
package:
https://golang.org/src/database/sql/sql.go?s=4943:5036#L178
In SQL, it's common to have "null" values be distinct from zero values, so
the DB package has a struct with the value and a flag whether the value was
On Fri, Oct 23, 2020 at 12:17 AM Ian Lance Taylor wrote:
> So there are several possible approaches. I'm guessing you want one
> that is more implicit, but as a general guideline Go tends to prefer
> explicit code.
>
>
I don't think there is a good implicit approach to this problem. If you
have
On Thu, Oct 22, 2020 at 1:19 PM Andrew wrote:
>
> I've finished the survey but want to add this:
> Go can add something for library author to "differentiate if a value was set
> or not internally", so that we can use plain Go type in the library.
>
> Here is a link to the problem:
>
