And for times you need a fast heap-allocated type, Swift's Noncopyable types have been pretty great in my experience. Especially so for graph data structures, w

And for times you need a fast heap-allocated type, Swift's Noncopyable types have been pretty great in my experience. Especially so for graph data structures, where previously retains/releases would be the biggest slowdown. Example here: https://forums.swift.org/t/noncopyable-generics-in-swift-a-code-walkthrough/70862 https://forums.swift.org/t/noncopyable-generics-in-swift-a-c... An added plus is that the Swift compiler seems to stack-promote a lot more often, compared to class/ManagedBuffer implementations.