gistfile1.txt

rbx-head-18mode :003 > Base64.respond_to?(:strict_encode64)
 => false 
rbx-head-18mode :004 > unless Base64.respond_to?(:strict_encode64)
rbx-head-18mode :005?>     module Base64
rbx-head-18mode :006?>         def strict_encode64(bin)
rbx-head-18mode :007?>             [bin].pack("m0")
rbx-head-18mode :008?>           end
rbx-head-18mode :009?>       end
rbx-head-18mode :010?>   end
 => #<Rubinius::CompiledCode strict_encode64 file=(irb)> 
rbx-head-18mode :011 > Base64.respond_to?(:strict_encode64)
 => false 
rbx-head-18mode :015 > unless Base64.respond_to?(:strict_encode64)
rbx-head-18mode :016?>     def Base64.strict_encode64(bin)
rbx-head-18mode :017?>         [bin].pack("m0")
rbx-head-18mode :018?>       end
rbx-head-18mode :019?>   end
 => #<Rubinius::CompiledCode strict_encode64 file=(irb)> 
rbx-head-18mode :020 > Base64.respond_to?(:strict_encode64)
 => true