My understanding of the original article was that it was about elegant abstractions and their costs. IMO Nim really shines here. This thread shows how low cost iterators really are in Nim. They are far cheaper in Nim than I thought they were. Kudos to the Nim core team!
@moerm also shows a tangential super power of Nim, which is that you not only get very low cost high level abstractions, you have enough expressiveness to do optimizations on par with C when you need to.
