I'd hope they'd also first think of: (reduce #'+ list-of-numbers) Then using a library like lparallel [1], you can convert it to the parallel version easily:

I'd hope they'd also first think of: (reduce #'+ list-of-numbers) Then using a library like lparallel [1], you can convert it to the parallel version easily: (preduce '+ list-of-numbers) [1] http://lparallel.org/preduce/ http://lparallel.org/preduce/