Class: Rational

Inherits:
Object show all
Defined in:
ext/json/lib/json/add/rational.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.json_create(object) ⇒ Object

See #as_json.



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# File 'ext/json/lib/json/add/rational.rb', line 9

def self.json_create(object)
  Rational(object['n'], object['d'])
end

Instance Method Details

#as_json ⇒ Object

Methods Rational#as_json and Rational.json_create may be used to serialize and deserialize a Rational object; see Marshal.

Method Rational#as_json serializes self, returning a 2-element hash representing self:

require 'json/add/rational'
x = Rational(2, 3).as_json
# => {"json_class"=>"Rational", "n"=>2, "d"=>3}

Method JSON.create deserializes such a hash, returning a Rational object:

Rational.json_create(x)
# => (2/3)



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# File 'ext/json/lib/json/add/rational.rb', line 29

def as_json(*)
  {
    JSON.create_id => self.class.name,
    'n'            => numerator,
    'd'            => denominator,
  }
end

#to_json(*args) ⇒ Object

Returns a JSON string representing self:

require 'json/add/rational'
puts Rational(2, 3).to_json

Output:

{"json_class":"Rational","n":2,"d":3}



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# File 'ext/json/lib/json/add/rational.rb', line 46

def to_json(*args)
  as_json.to_json(*args)
end