Re: [Xen-devel] [RFC] Generating Go bindings for libxl

[Nicholas Rosbrook <rosbrookn@xxxxxxxxxxxx>]

> Unfortunately this would mean the type assertion would be pretty long as
> well:
>   hvm := di.TypeUnion.(xenlight.DomainBuildInfoTypeUnionHvm)
>   hvm.[element]

Made worse by the fact that you really should check the type assertion first:

hvm, ok := di.TypeUnion.(xenlight.DomainBuildInfoTypeUnionHvm)
if !ok {
        //error
}

> But unfortunately I don't think there's a way around that; that's just a
> limitation of Go.

Right. If we wanted to make it easier on the users of the package, we *could*
add getters that hides the type assertion. But, that's still an extra step 
versus C.

-NR
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