11-19-2011
Hi.
You asked for something that can identify duplicate characters.
You didn't answer my question, as to whether those characters could be consecutive, or not.
The code given will remove nothing, and will print the same string back if it contains duplicate characters, otherwise it will print nothing. Keyword here being "print" (emphasis on a lack of the word "remove"!)
You could use that as a basis for what you do next.
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LEARN ABOUT DEBIAN
term::size::any
Term::Size::Any(3pm) User Contributed Perl Documentation Term::Size::Any(3pm)
NAME
Term::Size::Any - Retrieve terminal size
SYNOPSIS
# the traditional way
use Term::Size::Any qw( chars pixels );
($columns, $rows) = chars *STDOUT{IO};
($x, $y) = pixels;
DESCRIPTION
This is a unified interface to retrieve terminal size. It loads one module of a list of known alternatives, each implementing some way to
get the desired terminal information. This loaded module will actually do the job on behalf of "Term::Size::Any".
Thus, "Term::Size::Any" depends on the availability of one of these modules:
Term::Size (soon to be supported)
Term::Size::Perl
Term::Size::ReadKey (soon to be supported)
Term::Size::Win32
This release fallbacks to Term::Size::Win32 if running in Windows 32 systems. For other platforms, it uses the first of Term::Size::Perl,
Term::Size or Term::Size::ReadKey which loads successfully. (To be honest, I disabled the fallback to Term::Size and Term::Size::ReadKey
which are buggy by now.)
FUNCTIONS
The traditional interface is by importing functions "chars" and "pixels" into the caller's space.
chars
($columns, $rows) = chars($h);
$columns = chars($h);
"chars" returns the terminal size in units of characters corresponding to the given filehandle $h. If the argument is omitted,
*STDIN{IO} is used. In scalar context, it returns the terminal width.
pixels
($x, $y) = pixels($h);
$x = pixels($h);
"pixels" returns the terminal size in units of pixels corresponding to the given filehandle $h. If the argument is omitted, *STDIN{IO}
is used. In scalar context, it returns the terminal width.
Many systems with character-only terminals will return "(0, 0)".
SEE ALSO
It all began with Term::Size by Tim Goodwin. You may want to have a look at:
Term::Size
Term::Size::Perl
Term::Size::Win32
Term::Size::ReadKey
BUGS
Please reports bugs via CPAN RT, via web http://rt.cpan.org/NoAuth/Bugs.html?Dist=Term-Size-Any or e-mail to bug-Term-Size-Any@rt.cpan.org.
AUTHOR
Adriano R. Ferreira, <ferreira@cpan.org>
COPYRIGHT AND LICENSE
Copyright (C) 2008 by Adriano R. Ferreira
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-01-21 Term::Size::Any(3pm)