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#!/usr/bin/perl
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use warnings;
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use strict;
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my $productRef = sub
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{
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my $product = 1;
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foreach ( @_ ) {
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$product *= $_;
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}
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return $product;
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};
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my $printVal = &$productRef( 1, 2, 3, 4 );
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print( join( ' * ', 1, 2, 3, 4 ), " = " );
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print( "$printVal\n" );
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