晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/alt/ruby34/share/ruby/json/add/
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Current File : //opt/alt/ruby34/share/ruby/json/add/date.rb
# frozen_string_literal: true
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
  require 'json'
end
require 'date'

class Date

  # See #as_json.
  def self.json_create(object)
    civil(*object.values_at('y', 'm', 'd', 'sg'))
  end

  alias start sg unless method_defined?(:start)

  # Methods <tt>Date#as_json</tt> and +Date.json_create+ may be used
  # to serialize and deserialize a \Date object;
  # see Marshal[rdoc-ref:Marshal].
  #
  # \Method <tt>Date#as_json</tt> serializes +self+,
  # returning a 2-element hash representing +self+:
  #
  #   require 'json/add/date'
  #   x = Date.today.as_json
  #   # => {"json_class"=>"Date", "y"=>2023, "m"=>11, "d"=>21, "sg"=>2299161.0}
  #
  # \Method +JSON.create+ deserializes such a hash, returning a \Date object:
  #
  #   Date.json_create(x)
  #   # => #<Date: 2023-11-21 ((2460270j,0s,0n),+0s,2299161j)>
  #
  def as_json(*)
    {
      JSON.create_id => self.class.name,
      'y' => year,
      'm' => month,
      'd' => day,
      'sg' => start,
    }
  end

  # Returns a JSON string representing +self+:
  #
  #   require 'json/add/date'
  #   puts Date.today.to_json
  #
  # Output:
  #
  #   {"json_class":"Date","y":2023,"m":11,"d":21,"sg":2299161.0}
  #
  def to_json(*args)
    as_json.to_json(*args)
  end
end