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MathGroup Archive 1998

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Re: Write ing strings without quotes and linefeeds

  • To: mathgroup at smc.vnet.net
  • Subject: [mg13336] Re: [mg13297] Write ing strings without quotes and linefeeds
  • From: David Withoff <withoff>
  • Date: Mon, 20 Jul 1998 02:49:56 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

>     I am attempting to write a data file to disk using spaces as the
>     delimiters and linefeeds as record separators.  When I use Write, as in
>
>      Write[stream,"mystring \n","next line"]
>
>     what actually appears in the file is
>
>     "mystring \n""next line"
>
>     rather than:
>
>     mystring
>     next line
>
>
>     Does anyone know how to append line feeds onto strings and not put
>     quotes around strings?

Use OutputForm.  Apparently "stream" in this example was opened with
FormatType->InputForm, which is the default.

Two other issues that may be important here are that Write appends a
newline character to output automatically (use WriteString if you don't
want that), and concatenates the output when it is used with multiple
arguments.

Here is one example of something that might be of interest:

In[4]:= WriteString["file", OutputForm["mystring \n"],
                                     OutputForm["next line"]]

In[5]:= !!file
mystring
next line

Or you could open the stream with FormatType -> OutputForm in the first
place, or you could change the input and take advantage of the newline
that is appended by Write, etc.

Dave Withoff
Wolfram Research


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