ActiveSupport、String#ord
>> "a".ord NoMethodError: undefined method `ord' for "a":String from (irb):1 >> require "rubygems" => true >> require "active_support" => true >> "a".ord => 97 >> "abc".ord => 97
>> "a".ord NoMethodError: undefined method `ord' for "a":String from (irb):1 >> require "rubygems" => true >> require "active_support" => true >> "a".ord => 97 >> "abc".ord => 97