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RE: Comparing to many possibles

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Timothy Johnson
March 4, 2002 13:23
RE: Comparing to many possibles
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  I still am not convinced that all of the hoopla about \z is really
necessary.  I guess the question I need answered before I go back and change
anything is this:  How is the user supposed to enter an extra \n without
exiting the prompt?  What I mean is, the only situation in which this could
make a difference is if you concede that a user can somehow enter a \n
character into a prompt without returning that value back to your script.
Otherwise it's your fault if you don't chomp their response.

  There's a distinct possibility that I'm wrong here, but I haven't heard
any really good arguments on this.

-----Original Message-----
From: Jeff 'japhy' Pinyan []
Sent: Monday, March 04, 2002 1:07 PM
To: Dennis G. Wicks
Subject: Re: Comparing to many possibles

On Mar 4, Dennis G. Wicks said:

>Is there some perl shorthand that will make it easier to say
>	if ( $x eq 'X' || $x eq 'Y' || $x eq 'Z' )

You can use

  if ($x =~ /^(?:X|Y|Z)\z/) { ... }

I side with Randal in warning about the use of $ here where \z is clearly
the proper choice.

Jeff "japhy" Pinyan
RPI Acacia brother #734
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for?  <tenderpuss> why, yansliterate of course.
[  I'm looking for programming work.  If you like my work, let me know.  ]

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