From: Tanaka Akira Date: 2004-09-16T13:52:32+09:00 Subject: [ruby-dev:24275] Array#rindex: method `==' called on terminated object 次のように、method `==' called on terminated object というエラーが出る のは変ではないでしょうか。 % ./ruby -v -e ' len = 1000 arr = (0...len).to_a o = Object.new class << o; self end.__send__(:define_method, :==) {|a| arr.clear; arr.compact! false } arr[100] = o p arr.rindex(10) ' ruby 1.9.0 (2004-09-15) [i686-linux] -e:10:in `rindex': method `==' called on terminated object (0x401a501c) (NotImplementedError) from -e:10 # 続く -- [田中 哲][たなか あきら][Tanaka Akira]