# File lib/core/facets/string/camelcase.rb, line 20
    def camelcase(first_letter=nil)
      case first_letter
      when :upper, true
        upper_camelcase
      when :lower, false
        lower_camelcase
      else
        str = dup
        str.gsub!(/\/(.?)/){ "::#{$1.upcase}" }  # NOT SO SURE ABOUT THIS
        str.gsub!(/(?:_+|-+)([a-z])/){ $1.upcase }
        #str.gsub!(/(\A|\s)([a-z])/){ $1 + $2.upcase }
        str
      end
    end