Getting lists from ASCII input

Mats Cronqvist <>
Tue May 16 10:13:52 CEST 2006


Deryk Barker wrote:
> I'm still a (raw) beginner but...
> 
> I'm trying to write a program (a client - my students will write the
> server) which needs to allow the user to enter a list in repsonse to a
> prompt.
> 

   seems like a problem where using the scanner directly would be appropriate.

1> erl_scan:string("hello [a,b,c]").
{ok,[{atom,1,hello},
      {'[',1},
      {atom,1,a},
      {',',1},
      {atom,1,b},
      {',',1},
      {atom,1,c},
      {']',1}],
     1}

   perhaps parse the arg;

1> {ok,[{atom,_,Cmd}|R],_} = erl_scan:string("hello,[a,b,c]"),
2> {ok,Arg}=erl_parse:parse_term(R++[{dot,1}]),
3> {Cmd,Arg}.
{hello,[a,b,c]}


   mats



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