Today I was pleasantly surprised by Interface Builder. Not shiny, new,
where the hell have they put that buttonstreamlined IB3, but boring old IB2 which even Slowlaris users could work out how to use. I dragged a header defining a category with an IBAction onto IB, and lo, nay even behold, it did the right thing.
That may seem unexciting and even expected, but it's one of those nice cases where it's pleasing that everything just works. I thought category headers might be edge-case enough to confuse the thing; many people would put their IBAction definitions in the "regular" @interface header so that the IBOutlets are in the same place.