def eq(query_string, options = {:case_sensitive => false})
      do_comparison(query_string, options) do |comparator, item|
        comparator == item
      end
    end
def eq(query_string, options = {:case_sensitive => false})
      do_comparison(query_string, options) do |comparator, item|
        comparator == item
      end
    end
performs strict equality comparison.

 If arguments are strings, they are, by default,
 compared case-insensitive, if case-sensitivity
 is required, use:

 eq('something', :case_sensitive => true)