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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Current File : //opt/alt/ruby18/share/ri/1.8/system/Continuation/cdesc-Continuation.yaml
--- !ruby/object:RI::ClassDescription 
attributes: []

class_methods: []

comment: 
- !ruby/struct:SM::Flow::P 
  body: Continuation objects are generated by <tt>Kernel#callcc</tt>. They hold a return address and execution context, allowing a nonlocal return to the end of the <tt>callcc</tt> block from anywhere within a program. Continuations are somewhat analogous to a structured version of C's <tt>setjmp/longjmp</tt> (although they contain more state, so you might consider them closer to threads).
- !ruby/struct:SM::Flow::P 
  body: "For instance:"
- !ruby/struct:SM::Flow::VERB 
  body: "   arr = [ &quot;Freddie&quot;, &quot;Herbie&quot;, &quot;Ron&quot;, &quot;Max&quot;, &quot;Ringo&quot; ]\n   callcc{|$cc|}\n   puts(message = arr.shift)\n   $cc.call unless message =~ /Max/\n"
- !ruby/struct:SM::Flow::P 
  body: <em>produces:</em>
- !ruby/struct:SM::Flow::VERB 
  body: "   Freddie\n   Herbie\n   Ron\n   Max\n"
- !ruby/struct:SM::Flow::P 
  body: "This (somewhat contrived) example allows the inner loop to abandon processing early:"
- !ruby/struct:SM::Flow::VERB 
  body: "   callcc {|cont|\n     for i in 0..4\n       print &quot;\\n#{i}: &quot;\n       for j in i*5...(i+1)*5\n         cont.call() if j == 17\n         printf &quot;%3d&quot;, j\n       end\n     end\n   }\n   print &quot;\\n&quot;\n"
- !ruby/struct:SM::Flow::P 
  body: <em>produces:</em>
- !ruby/struct:SM::Flow::VERB 
  body: "   0:   0  1  2  3  4\n   1:   5  6  7  8  9\n   2:  10 11 12 13 14\n   3:  15 16\n"
constants: []

full_name: Continuation
includes: []

instance_methods: 
- !ruby/object:RI::MethodSummary 
  name: "[]"
- !ruby/object:RI::MethodSummary 
  name: call
name: Continuation
superclass: Object