NSSplitView and autolayout

Question

How should I use auto layout constrains inside NSSplitView subview?

My NSSplitView subview has 3 subview: topPane, tableCont

Answer 1

For anyone who stumbles onto this in the future and is looking for a jump-start into constraint-based NSSplitView replacements, I wrote a small project here that attempts to recreate a portion of NSSplitView's features using Auto Layout:

https://github.com/jwilling/JWSplitView

It's somewhat buggy, but it could be a useful reference to anyone wanting to go this route.