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Re: Removing files called minus (was: MAGIC MAGIC MAGIC)

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On Wednesday 30 July 2008 15:22:57 Zefram wrote:
> Tom Christiansen wrote:
> >   Ignoring surrounding whitespace also helps for when you
> >   read a filename in from a different file, and forget to
> >   trim it before opening:
>
> Forget?  If you forget to chomp your input lines then you'll have
> extraneous newlines pop up in many places, not just filenames.
> Ignoring the newline if the string is used in one place risks
> misleading this forgetful programmer into thinking that the newline
> isn't there, allowing the mistake to spread to other parts of the
> program.  Seems like a misfeature to me.

I'd like to inject here that chomp() is not enough to get rid of windows 
or macintosh-style newlines. So you want:

	$_ =~ s/[\r\n]//g;	# or whatever

to get really rid of them. Otherwise, the first time someone feeds your 
code a textfile that has been "converted" on Win32, your code will fail 
in interesting ways.

Just one of these captchas that beginners only learn after painful 
experience :(

All the best,

Tels

-- 
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Thread Previous | Thread Next

• Removing files called minus (was: MAGIC MAGIC MAGIC) by Tom Christiansen
• Re: Removing files called minus (was: MAGIC MAGIC MAGIC) by Aaron Crane
• Re: Removing files called minus (was: MAGIC MAGIC MAGIC) by Zefram
• Re: Removing files called minus (was: MAGIC MAGIC MAGIC) by Tels
• Re: Removing files called minus (was: MAGIC MAGIC MAGIC) by David Nicol
• Re: Removing files called minus by Mark Mielke
• Re: Removing files called minus (was: MAGIC MAGIC MAGIC) by Aristotle Pagaltzis
• RE: Removing files called minus (was: MAGIC MAGIC MAGIC) by Ed Avis