use invokelatest to check for binding existance after evaling a package load

[KristofferC]

No description provided.

[oxinabox]

Oh cool, we are now solving isdefined at compile-time?

[KristofferC]

I don't think the isdefined check happens at compile time but the visibility of a binding is now only in a certain world age range so if you introduce a new binding (like when loading a package) you need to either hit top-level or use invokelatest (in the same way as if you would have defined a new method in local scope).