On Sunday, 4 June 2017 at 22:52:55 UTC, Mike B Johnson wrote:
I am dealing with some COM stuff and some functions use
VARIANT, which can hold an enum.
Instead of having to manually convert the enum(and for that
matter, other things) to VARIANT, is it possible to have them
automatically converted?
This is because an enum is always convertible to a VARIANT but
not the other way around. So, when a enum is passed to a
function accepting a VARIANT, it should just work. Overloading
is not an option.
Not sure if this breaks your requirement but you could generate
overloads or rather templated version of your variant accepting
function with a mixin that introspects on functions with a
certain uda in the module. See excel-d for an example.