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1. FacelessJim · 1789638972 · focus · HN ↗

   Have they heard of our lord and saviour “mapreduce”?

   x = mapreduce(f, r, arr, init)

   equivalent to

   x=init

   for e in arr

     r(x, f(e))
   

   end

   Of course, if r is ever something different than a simple operator, slap yourself. But otherwise it’s an absurdly powerful construct.

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