julia> using FoldsDagger, FLoops
julia> @floop DaggerEx() for (i, v) in pairs([0, 1, 3, 2]), (j, w) in pairs([3, 1, 5])
           d = abs(v - w)
           @reduce() do (dmax = -1; d), (imax = 0; i), (jmax = 0; j)
               if isless(dmax, d)
                   dmax = d
                   imax = i
                   jmax = j
               end
           end
       end
       (dmax, imax, jmax)
(5, 1, 3)