Tie::CountLoop - Have a counter looping in a scalar with min max and increment value.
use Tie::CountLoop; tie my $counter , 'Tie::CountLoop',15 ,-1 ,15 ,7 ,0; my $t = tied $counter; $t->increment( 1 ); for ( 1 .. 20 ) { print " <<$counter>> <$_> \n"; } ## stop temporary the auto increment behaviour $t->auto( 0 ); for ( 1 .. 20 ) { print " <<$counter>> <$_> \n"; } or ## the default value allow this ## it is the same as my $counter , 'Tie::CountLoop', 0 , 1 , ( 2**32 ) - 1 , 0 , 0; use Tie::CountLoop; tie my $counter , 'Tie::CountLoop'; for ( 1 .. 20 ) { print " <<$counter>> <$_> \n"; } ## How to toggle a binary flag after 5 access to the valriable my $t1 = tie my $counter1 , 'Tie::CountLoop',0,1,1,0,5; for ( 1 .. 20 ) { print " <<$counter1>> <$_> \n"; }
Tie::CountLoop allows you to tie a scalar in such a way that it increments each time it is used. The tie takes 4 optionals extra arguments.
Tie::CountLoop
Argument 1: is the start value of the counter. (default =0).
Argument 2: is the increment value. (default = 1).
Argument 3: is the maximal value. When this value is reached, the counter is set to the minimal value (default = (2**32) -1)
Argument 4: is the minimal value. When this value is reached if we used an negative increment value, the counter is set to the maximal value (default = 0)
Argument 5: is a skipping value. If set to 3, means that you could access the counter 3 time without incrementing (default=1)
The Tie::CountLoop provide 7 extra methods.
which change the autoincrement behaviour. With 1, the counter is incremented when accessed. With 0, the counter is NOT incremented when accessed.
which toggle the autoincrement behaviour (on and off and again).
get/set the value of the counter without incrementing the counter.
get/set the maximal value for the counter.
get/set the minimal value for the counter.
get/set the increment value for the counter.
get/set the skipping value for the counter.
Revision 1.7 2008/09/25 15:52:27 fabrice add extra methods to access all parameter of the counter clean the code for auto and toggle to allow instantiation by object Revision 1.6 2006/11/14 13:31:56 fabrice fix default value for skip parameter Revision 1.5 2006/02/03 10:42:55 fabrice add README file Revision 1.4 2006/02/03 10:21:37 fabrice correct code for maximal and minimal value after increment Revision 1.3 2006/01/26 19:31:20 fabrice add method 'retrieve' Revision 1.2 2006/01/26 15:53:56 fabrice pod created Revision: 1.1 start project
This package was written by Dulaunoy Fabrice <fabrice@dulaunoy.com>.
This package is copyright 2006-2008 by Dulaunoy Fabrice <fabrice@dulaunoy.com>.
Under the GNU GPL2
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Tie::CountLoop Copyright (C) 2004-2008 DULAUNOY Fabrice Tie::CountLoop comes with ABSOLUTELY NO WARRANTY; for details See: http://www.gnu.org/licenses/gpl.html This is free software, and you are welcome to redistribute it under certain conditions;
To install Tie::CountLoop, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tie::CountLoop
CPAN shell
perl -MCPAN -e shell install Tie::CountLoop
For more information on module installation, please visit the detailed CPAN module installation guide.