module Vrobot4
   Version = '4.00'.freeze

   @@debug = 0
   def self.debug= set; @@debug = set; end
   def self.debug     ; @@debug;       end

   def self.log lv, *text
      if (lv != :DEBUG  || @@debug >= 1) &&
         (lv != :DEBUGV || @@debug >= 2)
         puts "[" + lv.to_s.ljust(6) + "] " + text.join(" ")
      end
   end

   def self.is_num? s
      /\A[-+]?[0-9]*\.?[0-9]+\Z/ === s
   end
end

## EOF