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proc
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opt
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ruby33
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ruby
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json
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rational.rb
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#frozen_string_literal: false unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED require 'json' end class Rational # See #as_json. def self.json_create(object) Rational(object['n'], object['d']) end # Methods <tt>Rational#as_json</tt> and +Rational.json_create+ may be used # to serialize and deserialize a \Rational object; # see Marshal[rdoc-ref:Marshal]. # # \Method <tt>Rational#as_json</tt> 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) # def as_json(*) { JSON.create_id => self.class.name, 'n' => numerator, 'd' => denominator, } end # Returns a JSON string representing +self+: # # require 'json/add/rational' # puts Rational(2, 3).to_json # # Output: # # {"json_class":"Rational","n":2,"d":3} # def to_json(*args) as_json.to_json(*args) end end