# File syck/lib/syck/rubytypes.rb, line 405
def to_yaml( opts = {} )
return super unless YAML::ENGINE.syck?
YAML::quick_emit( self, opts ) do |out|
out.map( taguri, nil ) do |map|
map.add( 'denominator', denominator )
map.add( 'numerator', numerator )
end
end
end