On Wednesday, November 28, 2018 at 2:43:26 AM UTC, Matthew Flatt wrote:
> The compilers in both cases know some facts about how `cons` relates to 
> other primitives, but they also know how structure constructors and 
> accessors relate, so it's not as big a difference at that level. 

There are also some runtime differences, right? For example, the 
optimisation that reduces m invocations of `length` on the same length-n 
list from O(mn) to O(m).

Is there anything else interesting like that in there?


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