On Wednesday, 27 July 2016 at 15:32:59 UTC, Meta wrote:
On Wednesday, 27 July 2016 at 13:59:54 UTC, stunaep wrote:
So how would I make a function that takes an enum and an id as
a parameter and returns a member in the enum? I tried for
quite some time to do this but it wont let me pass Test as a
parameter unless I use templates. I finally came up with this
but it wont let me return null when there's nothing found
E findEnumMember(E)(int id) if (is(E == enum)) {
auto found = [EnumMembers!E].find!(a => a.id == id)();
if(!found.empty)
return found.front;
else
...What do I return? null gives error
}
If you're going to do it like this your only real options are
to return a Nullable!E or throw an exception if the id isn't
found.
I tried Nullable!E earlier and it didnt work. I dont need it to
be done like this, it just has to be done someway. I'm asking for
help because that's the only way I could think of.
