　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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sh-3ll 1.0

DIR:/opt/alt/ruby18/share/ri/1.8/system/Module/

Current File : //opt/alt/ruby18/share/ri/1.8/system/Module/undef_method-i.yaml

--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Prevents the current class from responding to calls to the named method. Contrast this with <tt>remove_method</tt>, which deletes the method from the particular class; Ruby will still search superclasses and mixed-in modules for a possible receiver.
- !ruby/struct:SM::Flow::VERB 
  body: "   class Parent\n     def hello\n       puts &quot;In parent&quot;\n     end\n   end\n   class Child &lt; Parent\n     def hello\n       puts &quot;In child&quot;\n     end\n   end\n\n   c = Child.new\n   c.hello\n\n   class Child\n     remove_method :hello  # remove from child, still in parent\n   end\n   c.hello\n\n   class Child\n     undef_method :hello   # prevent any calls to 'hello'\n   end\n   c.hello\n"
- !ruby/struct:SM::Flow::P 
  body: <em>produces:</em>
- !ruby/struct:SM::Flow::VERB 
  body: "   In child\n   In parent\n   prog.rb:23: undefined method `hello' for #&lt;Child:0x401b3bb4&gt; (NoMethodError)\n"
full_name: Module#undef_method
is_singleton: false
name: undef_method
params: |
  undef_method(symbol)    => self

visibility: public