version 1.1, 2003/04/18 02:40:24
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version 1.4, 2003/04/24 15:12:40
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# |
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# Implement a simple stack in terms of a list. |
# Implement a simple stack in terms of a list. |
# |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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=pod |
=pod |
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Line 65 sub pop {
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Line 88 sub pop {
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return pop(@$self); |
return pop(@$self); |
} |
} |
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=pod |
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=head 1 |
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Returns the number of items on the stack. |
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=cut |
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sub Count { |
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my $self = shift; |
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my $elements = scalar(@$self); |
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return $elements; |
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} |
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1; |
1; |
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