require 'traits'
#
# multiple traits can be defined at once using a list/array of string/sybmol
# arguments
#
class C
  has :t0, :t1
  has %w( t2 t3 ) 
end

obj = C::new
obj.t0 = 4 
obj.t3 = 2 
print obj.t0, obj.t3, "\n"