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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Input:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> You have a binary with the text of an Erlang term in it:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;font-family:Consolas;color:#1F497D'>Data = <<"{get,\"user\",\"wilson\",\"lname\"}">>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Output:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> The Erlang term represented by the binary:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;font-family:Consolas;color:#1F497D'>D = binary_to_list(Data),<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;font-family:Consolas;color:#1F497D'>{ok, Tokens, _} = erl_scan:string(D ++ "."),<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;font-family:Consolas;color:#1F497D'>{ok, Term} = erl_parse:parse_term(Tokens),<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;font-family:Consolas;color:#1F497D'>Term.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> erlang-questions-bounces@erlang.org [mailto:erlang-questions-bounces@erlang.org] <b>On Behalf Of </b>Muhammad Yousaf<br><b>Sent:</b> Wednesday, April 06, 2011 3:07 PM<br><b>To:</b> comptekki@gmail.com; erlang-questions@erlang.org<br><b>Subject:</b> [erlang-questions] Re: How to remove \ from string<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Thank you i got your point but what i am trying to do is , remote computer is sending me a data via socket like {get,"user","wilson","lname"}<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>but for some reason i cannot match it in case statement my output is <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>im in none </span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>recieve Data from socket:[255,251,31,255,251,32,255,251,24,255,251,39,255,253,</span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> 1,255,251,3,255,253,3]</span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>im in none </span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>recieve Data from socket:"{get,\"user\",\"wilson\",\"lname\"}"</span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>im in none </span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>recieve Data from socket:"\r\n"</span></i></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Code is as fellow <o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>do_echo(Socket) -><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> case gen_tcp:recv(Socket, 0) of<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> {ok, Data} -><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> D = binary_to_list(Data),<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> case D of <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> {get,_,_,_} -> io:format("im innnnnnn~n");%gen_tcp:send(Socket,erl_api:search());<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> _Else -> io:format("im in none ~n")<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> end,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> io:format("recieve Data from socket:~p~n",[D]),<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> do_echo(Socket);<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> {error, closed} -><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> ok<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> end.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Any idea what i am doing wrong ??<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br></span><span class=ecapple-style-span><i><span style='font-family:"Tahoma","sans-serif"'>Regards,</span></i></span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span class=ecapple-style-span><b><span style='font-family:"Tahoma","sans-serif"'>Muhammad Yousaf</span></b></span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br><br><br><br>> Date: Wed, 6 Apr 2011 12:44:29 -0600<br>> Subject: Re: [erlang-questions] Re: How to remove \ from string<br>> From: comptekki@gmail.com<br>> To: muhammad.yousaf@live.com<br>> CC: erlang-questions@erlang.org<br>> <br>> On Wed, Apr 6, 2011 at 11:36 AM, Muhammad Yousaf<br>> <muhammad.yousaf@live.com> wrote:<br>> ><br>> > Thanks a lot but i only want to remove backslash not double quotes<br>> > for example<br>> > Val = <<"{get,\"user\",\"wilson\",\"lname\"}">> ,<br>> > i need Val= <<"{get,"user","wilson","lname"}">><br>> > what i am doing with your help<br>> ><br>> > re:replace(Val,["\\"],"",[global, {return,list}]). getting error<br>> ><br>> > [X||X<-"{get,\"user\",\"wilson\",\"lname\"}",X=/=$\\].<br>> ><br>> <br>> <snip><br>> <br>> <br>> Another way to see what is going on is do this:<br>> <br>> Y=binary_to_list(<<"{get,\"user\",\"wilson\",\"lname\"}">>).<br>> [io_lib:format("~c~w",[X, X])||X <- Y].<br>> <br>> You'll see \" in the output, but the ascii numeric value for that<br>> character is 34.<br>> <br>> Then if you go and look and see what 34 is on the ascii table below,<br>> you'll see it is ".<br>> <br>> http://www.asciitable.com/<br>> <br>> -wes<o:p></o:p></span></p></div></div></div></body></html>