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											2018-01-21 10:33:32 -05:00
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							|  |  |  | <article> | 
					
						
							|  |  |  | <h2>Erlang mode</h2> | 
					
						
							|  |  |  | <form><textarea id="code" name="code"> | 
					
						
							|  |  |  | %% -*- mode: erlang; erlang-indent-level: 2 -*- | 
					
						
							|  |  |  | %%% Created :  7 May 2012 by mats cronqvist <masse@klarna.com> | 
					
						
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							|  |  |  | %% @doc | 
					
						
							|  |  |  | %% Demonstrates how to print a record. | 
					
						
							|  |  |  | %% @end | 
					
						
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							|  |  |  | -module('ex'). | 
					
						
							|  |  |  | -author('mats cronqvist'). | 
					
						
							|  |  |  | -export([demo/0, | 
					
						
							|  |  |  |          rec_info/1]). | 
					
						
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							|  |  |  | -record(demo,{a="One",b="Two",c="Three",d="Four"}). | 
					
						
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							|  |  |  | rec_info(demo) -> record_info(fields,demo). | 
					
						
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							|  |  |  | demo() -> expand_recs(?MODULE,#demo{a="A",b="BB"}). | 
					
						
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							|  |  |  | expand_recs(M,List) when is_list(List) -> | 
					
						
							|  |  |  |   [expand_recs(M,L)||L<-List]; | 
					
						
							|  |  |  | expand_recs(M,Tup) when is_tuple(Tup) -> | 
					
						
							|  |  |  |   case tuple_size(Tup) of | 
					
						
							|  |  |  |     L when L < 1 -> Tup; | 
					
						
							|  |  |  |     L -> | 
					
						
							|  |  |  |       try | 
					
						
							|  |  |  |         Fields = M:rec_info(element(1,Tup)), | 
					
						
							|  |  |  |         L = length(Fields)+1, | 
					
						
							|  |  |  |         lists:zip(Fields,expand_recs(M,tl(tuple_to_list(Tup)))) | 
					
						
							|  |  |  |       catch | 
					
						
							|  |  |  |         _:_ -> list_to_tuple(expand_recs(M,tuple_to_list(Tup))) | 
					
						
							|  |  |  |       end | 
					
						
							|  |  |  |   end; | 
					
						
							|  |  |  | expand_recs(_,Term) -> | 
					
						
							|  |  |  |   Term. | 
					
						
							|  |  |  | </textarea></form> | 
					
						
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							|  |  |  |     <p><strong>MIME types defined:</strong> <code>text/x-erlang</code>.</p> | 
					
						
							|  |  |  |   </article> |