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Full Discussion: Using Variables to Set Other Variables
Top Forums UNIX for Dummies Questions & Answers Using Variables to Set Other Variables Post 69836 by superdelic on Wednesday 20th of April 2005 04:10:57 PM
Old 04-20-2005
Using Variables to Set Other Variables
I have a script that I'm trying to shorten (below) by removing repetitive code.
if [[ -a ${abccontrols}/Commodity_NDM_${alt_db}_done ]]
then
commodity_ndm_done=Y
fi

if [[ -a ${abccontrols}/Customer_NDM_${alt_db}_done ]]
then
customer_ndm_done=Y
fi

if [[ -a ${abccontrols}/Department_NDM_${alt_db}_done ]]
then
department_ndm_done=Y
fi

if [[ -a ${abccontrols}/Division_NDM_${alt_db}_done ]]
then
division_ndm_done=Y
fi

if [[ -a ${abccontrols}/Order_Detail_NDM_${alt_db}_done ]]
then
order_detail_ndm_done=Y
fi

if [[ -a ${abccontrols}/Order_Summary_NDM_${alt_db}_done ]]
then
order_summary_ndm_done=Y
fi

if [[ -a ${abccontrols}/Witron_Forward_Pick_NDM_${alt_db}_done ]]
then
witron_forward_pick_ndm_done=Y
fi

And I tried using a loop as such:
{
echo "Commodity"
echo "Customer"
echo "Department"
echo "Division"
echo "Order_Detail"
echo "Order_Summary"
echo "Witron_Forward_Pick"
} |
while read v_type
do
if [[ -a ${abccontrols}/${v_type}_NDM_${alt_db}_done ]]
then
$(echo ${v_type} | tr '[A-Z]' '[a-z]')_ndm_done=Y
fi
done

Naturally, it doesn't work. Can I make variables set other variables by this method or another?
 

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LEARN ABOUT DEBIAN

perl::critic::policy::variables::prohibitunusedvariables

Perl::Critic::Policy::Variables::ProhibitUnusedVariablesUser)Contributed Perl DocumenPerl::Critic::Policy::Variables::ProhibitUnusedVariables(3pm)

NAME

       Perl::Critic::Policy::Variables::ProhibitUnusedVariables - Don't ask for storage you don't need.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Unused variables clutter code and require the reader to do mental bookkeeping to figure out if the variable is actually used or not.

       At present, this Policy is very limited in order to ensure that there aren't any false positives.  Hopefully, this will become more
       sophisticated soon.

       Right now, this only looks for simply declared, uninitialized lexical variables.

	   my $x;	   # not ok, assuming no other appearances.
	   my @y = ();	   # ok, not handled yet.
	   our $z;	   # ok, global.
	   local $w;	   # ok, global.

       This module is very dumb: it does no scoping detection, i.e. if the same variable name is used in two different locations, even if they
       aren't the same variable, this Policy won't complain.

       Have to start somewhere.

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Elliot Shank "<perl@galumph.com>"

COPYRIGHT

       Copyright (c) 2008-2011 Elliot Shank.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license
       can be found in the LICENSE file included with this module.

perl v5.14.2							    2012-06-07	     Perl::Critic::Policy::Variables::ProhibitUnusedVariables(3pm)
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