# File narray_ext.rb, line 245 def reverse(*ranks) if self.rank==0 return self.dup elsif ranks.size==0 idx = (0...self.rank).map{-1..0} else idx = [true]*self.rank ranks.each do |i| if !i.kind_of?(Integer) raise ArgumentError, "Argument must be Integer" end if i >= self.rank raise ArgumentError, "dimension(%s) out of range"%[i] end idx[i] = -1..0 end end self[*idx] end