For people with crazysauce ideas about the interactions of Ruby IO objects and #each

gistfile1.rb

1.9.3-p0 :001 > reader, writer = IO.pipe
 => [#<IO:fd 5>, #<IO:fd 6>] 
1.9.3-p0 :002 > writer.respond_to? :each
 => true 
1.9.3-p0 :003 > reader.respond_to? :each
 => true 
1.9.3-p0 :004 > class << reader; undef :each; end
 => nil 
1.9.3-p0 :005 > class << writer; undef :each; end
 => nil 
1.9.3-p0 :006 > reader.respond_to? :each
 => false 
1.9.3-p0 :007 > writer.respond_to? :each
 => false 
1.9.3-p0 :008 > writer << "data"
 => #<IO:fd 6> 
1.9.3-p0 :009 > reader.read(4)
 => "data"