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unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
require 'json'
end
defined?(::Rational) or require 'rational'
class Rational
# Deserializes JSON string by converting numerator value <tt>n</tt>,
# denominator value <tt>d</tt>, to a Rational object.
def self.json_create(object)
Rational(object['n'], object['d'])
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'n' => numerator,
'd' => denominator,
}
end
# Stores class name (Rational) along with numerator value <tt>n</tt> and denominator value <tt>d</tt> as JSON string
def to_json(*)
as_json.to_json
end
end
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