Parametric types definition ordering

[LenkyDev]

Can't access a function from a preceding type.

A parametric type must be defined before its functions can be accessed.

This is a major pain point when working with generics.

It forces the generic type to sit in a file that's above all other (strange and potentially unstable workaround) or in a parent module.

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Knight Breaker

[SU-Daigoro]

This is actually the number one reason, why i stopped using parametric classes in Verse.
There is also a bug, that can hide this error in UEFN, but crash your preview session when trying to start one (at least back in ~2024).

[janvitek]

There is no fundamental reason for this limitation, but fixing it will take a non-trivial re-engineering of the compiler (the issue has to do with pass ordering).