# File lib/backports/1.8.7/array/rindex.rb, line 6 def rindex_with_block(*arg) return to_enum(:rindex) if !block_given? && arg.empty? return rindex_without_block(*arg) unless block_given? && arg.empty? i = 0 reverse_each{|o| i += 1; return size - i if yield o} return nil end