Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1998
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1998

[Date Index] [Thread Index] [Author Index]

Search the Archive

FileManipulation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg14987] FileManipulation
  • From: Jason Gill <jgill at vbimail.champlain.edu>
  • Date: Wed, 2 Dec 1998 03:59:07 -0500
  • Organization: IBM Microelectronics
  • Sender: owner-wri-mathgroup at wolfram.com

I encountered an interesting behavior running 3.1 on Win 95.  When using
the functions filenames to generate a list of files and then attempting
to use that list within a function results in a "out to lunch error".
 The example I am using is
In:
all = FileNames[*,$HomeDirectory,1]; Out: 
{c:\\95drive,c:\\autoexec.bat, etc.} However attempting to

Map[FileType,all]

sends the kernel out never to return.

On futher investigation,
In:
FullForm[all[[1]]]
Out:
"c:\\\\95drive"

It appears that Mathematica perpetually adds backslashes. That is if I
take the a original version of "all" and manually stirp away the second
backslash, Mapping FileType works as expected.  I am not sure what is
causing this behavior, or how to correct it without manually removing
the extra backslash in FileNames.

I suspect I am not describing the problem very clearly, but the problem
is based on an example Given in the Mathematica book, page 15, where I
have substituted FileType for FileByteCount.

Anyways, It is not a very critical application, I was just wondering if
anyone else has encountered it, or more importantly why is it doing it?

Thanks,
Jason




  • Prev by Date: Implicit plot 3D
  • Next by Date: Re:Fourier Transform PDF Characteristic Function
  • Previous by thread: Re: Implicit plot 3D
  • Next by thread: Re: FileManipulation