# File lib/core/facets/array/missing.rb, line 13 def missing missing, array = [], arrange i, length = 0, array.size - 1 while i < length x0 = array[i] x1 = array[i+1] c = (Range === x0 ? x0.last : x0) n = (Range === x1 ? x1.first : x1) missing << ( c.succ.succ == n ? c.succ : ((c.succ)..(n.pred)) ) i += 1 end return missing end