On Sun, 2016-09-11 at 19:41 +1000, Kiki Sugiaman wrote:
> Not exactly a solution for the faint hearted, hah!
It's long, but not complicated, and in the context of Axel's comment
would be placed in a helper of some variety.
For those at home, it's necessary to take the address of the interface
value so that it's not passed as the interface{} that reflect.ValueOf
(so it retains the Fooer type indirectly via a *Fooer), the first Elem
dereferences that pointer to get the original Fooer, then the second
gets the concrete value in the Fooer, and finally IsNil does what it
says. The only thing here that is possible a trap for novitiates is that
you need to do the &I, Elem dance.
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